St. John, MO Weather Forecast & Current Conditions

Feedback E-mail the Weather

Quick Clicks

Weather World

St. John, MO Weather Maps

°F °C°F °C
Saint John Weather Map
UTC Time: 9/16/2026, 13:07
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

St. John, MO Regional Weather

Expires:202609161400;;546494
ASUS43 KLSX 161307
RWRMO 

WEATHER SUMMARY FOR MISSOURI
NATIONAL WEATHER SERVICE SPRINGFIELD MO
800 AM CDT WED SEP 16 2026

NOTE: "FAIR" INDICATES FEW OR NO CLOUDS BELOW 12,000 FEET WITH NO
       SIGNIFICANT WEATHER AND/OR OBSTRUCTIONS TO VISIBILITY.
       CURRENT SKY AND/OR WEATHER CONDITIONS ARE NOT AVAILABLE FOR
       CHILLICOTHE AND FARMINGTON.


MOZ051-052-059>065-161400-
...EAST CENTRAL MISSOURI...
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ST LOUIS INTL  PTSUNNY   77  70  79 E9        30.24R                  
SPIRIT OF STL  PTSUNNY   77  71  82 E5        30.22S                  
ST CHARLES     PTSUNNY   75  71  87 CALM      30.23R                  
                   
$$

SKY/WX - Weather  TMP - Temperature  DP - Dew Point  RH - Humidity
WIND - Wind Direction/Speed PRES - Barometric Pressure VSB - Visibility
WCI - Wind Chill Index E13G22 Wind - East Wind 13 mph/Gusts of 22 mph

Saint John, MO

Today
Thunderstorms
95°/ 75° 35°/ 24°
40%
Thursday
Sunny
98°/ 72° 37°/ 22°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Saturday
Sunny
98°/ 72° 37°/ 22°
40%
Sunday
Thunderstorms
92°/ 68° 33°/ 20°
40%
Monday
Thunderstorms
85°/ 65° 29°/ 18°
30%
Tuesday
Rain Showers
82°28°
20%

Day: Partly sunny with a chance of showers and thunderstorms. Highs in the mid 90s. East winds around 5 mph, becoming southwest this afternoon. Chance of rain 40 percent. Heat index values up to 106.

Night: Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Humid with lows in the mid 70s. South winds around 5 mph. Chance of rain 30 percent. Heat index values up to 103 early in the evening.

Saint Louis City, MO

Today
Thunderstorms
95°/ 75° 35°/ 24°
40%
Thursday
Sunny
98°/ 72° 37°/ 22°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Saturday
Sunny
98°/ 72° 37°/ 22°
40%
Sunday
Thunderstorms
92°/ 68° 33°/ 20°
40%
Monday
Thunderstorms
85°/ 65° 29°/ 18°
30%
Tuesday
Rain Showers
82°28°
20%

Day: Partly sunny with a chance of showers and thunderstorms. Highs in the mid 90s. East winds around 5 mph, becoming southwest this afternoon. Chance of rain 40 percent. Heat index values up to 106.

Night: Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Humid with lows in the mid 70s. South winds around 5 mph. Chance of rain 30 percent. Heat index values up to 103 early in the evening.

Saint Charles, MO

Today
Thunderstorms
95°/ 75° 35°/ 24°
40%
Thursday
Sunny
98°/ 72° 37°/ 22°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Saturday
Sunny
98°/ 72° 37°/ 22°
40%
Sunday
Thunderstorms
92°/ 68° 33°/ 20°
40%
Monday
Thunderstorms
85°/ 65° 29°/ 18°
30%
Tuesday
Rain Showers
82°28°
20%

Day: Partly sunny with a chance of showers and thunderstorms. Highs in the mid 90s. East winds around 5 mph, becoming southwest this afternoon. Chance of rain 40 percent. Heat index values up to 106.

Night: Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Humid with lows in the mid 70s. South winds around 5 mph. Chance of rain 30 percent. Heat index values up to 103 early in the evening.

Madison, IL

Today
Thunderstorms
95°/ 75° 35°/ 24°
40%
Thursday
Sunny
98°/ 72° 37°/ 22°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Saturday
Sunny
98°/ 72° 37°/ 22°
40%
Sunday
Thunderstorms
92°/ 68° 33°/ 20°
40%
Monday
Thunderstorms
85°/ 65° 29°/ 18°
30%
Tuesday
Rain Showers
82°28°
20%

Day: Partly sunny with a chance of showers and thunderstorms. Highs in the mid 90s. East winds around 5 mph, becoming southwest this afternoon. Chance of rain 40 percent. Heat index values up to 106.

Night: Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Humid with lows in the mid 70s. South winds around 5 mph. Chance of rain 30 percent. Heat index values up to 103 early in the evening.

Saint Clair, IL

Today
Thunderstorms
95°/ 75° 35°/ 24°
40%
Thursday
Sunny
98°/ 72° 37°/ 22°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Saturday
Sunny
98°/ 72° 37°/ 22°
40%
Sunday
Thunderstorms
92°/ 68° 33°/ 20°
40%
Monday
Thunderstorms
85°/ 65° 29°/ 18°
30%
Tuesday
Rain Showers
82°28°
20%

Day: Partly sunny with a chance of showers and thunderstorms. Highs in the mid 90s. East winds around 5 mph, becoming southwest this afternoon. Chance of rain 40 percent. Heat index values up to 106.

Night: Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Humid with lows in the mid 70s. South winds around 5 mph. Chance of rain 30 percent. Heat index values up to 103 early in the evening.

Monroe, MO

Today
Thunderstorms
95°/ 75° 35°/ 24°
30%
Thursday
Thunderstorms
98°/ 72° 37°/ 22°
20%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Sat Night
Thunderstorms
72°22°
20%
Sunday
Rain Showers
95°/ 68° 35°/ 20°
30%
Monday
Thunderstorms
88°/ 62° 31°/ 17°
40%
Tuesday
Rain Showers
82°28°
30%

Day: Mostly sunny. A chance of thunderstorms with a slight chance of showers this afternoon. Hot with highs in the mid 90s. Southeast winds around 5 mph, becoming southwest around 5 mph this afternoon. Chance of rain 30 percent. Heat index values up to 107.

Night: Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the mid 70s. South winds around 5 mph. Chance of rain 30 percent. Heat index values up to 102 early in the evening.

Greene, IL

Today
Thunderstorms
92°/ 72° 33°/ 22°
50%
Thursday
Sunny
95°/ 70° 35°/ 21°
0%
Friday
Thunderstorms
92°/ 72° 33°/ 22°
20%
Saturday
Sunny
95°/ 68° 35°/ 20°
50%
Sunday
Thunderstorms
88°31°
50%
Sun Night-Mon
Thunderstorms
65°18°
40%
Mon Night
Rain Showers
62°17°
30%
Tuesday
Rain Showers
80°27°
20%

Day: Partly sunny. A chance of showers and thunderstorms, mainly this morning. Highs in the lower 90s. East winds around 5 mph, becoming north this afternoon. Chance of rain 50 percent. Heat index values up to 102 this afternoon.

Night: Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear after midnight. Humid with lows in the lower 70s. East winds around 5 mph, becoming south after midnight. Chance of rain 20 percent.

Monroe, IL

Today
Thunderstorms
95°/ 75° 35°/ 24°
30%
Thursday
Thunderstorms
98°/ 72° 37°/ 22°
20%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Sat Night
Thunderstorms
72°22°
20%
Sunday
Rain Showers
95°/ 68° 35°/ 20°
30%
Monday
Thunderstorms
88°/ 62° 31°/ 17°
40%
Tuesday
Rain Showers
82°28°
30%

Day: Mostly sunny. A chance of thunderstorms with a slight chance of showers this afternoon. Hot with highs in the mid 90s. Southeast winds around 5 mph, becoming southwest around 5 mph this afternoon. Chance of rain 30 percent. Heat index values up to 107.

Night: Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the mid 70s. South winds around 5 mph. Chance of rain 30 percent. Heat index values up to 102 early in the evening.

Franklin, MO

Today
Thunderstorms
92°/ 75° 33°/ 24°
30%
Thursday
Thunderstorms
95°/ 72° 35°/ 22°
20%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Saturday
Sunny
95°/ 70° 35°/ 21°
20%
Sunday
Rain Showers
92°/ 65° 33°/ 18°
40%
Monday
Thunderstorms
85°/ 62° 29°/ 17°
40%
Tuesday
Rain Showers
80°27°
30%

Day: Mostly sunny. A chance of showers and thunderstorms this afternoon. Highs in the lower 90s. South winds around 5 mph. Chance of rain 30 percent. Heat index values up to 104.

Night: Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the mid 70s. South winds around 5 mph. Chance of rain 30 percent. Heat index values up to 100 early in the evening.

Montgomery, MO

Today
Thunderstorms
92°/ 72° 33°/ 22°
40%
Thursday
Sunny
95°/ 70° 35°/ 21°
0%
Friday
Sunny
92°/ 72° 33°/ 22°
0%
Saturday
Sunny
95°/ 68° 35°/ 20°
50%
Sunday
Thunderstorms
88°31°
50%
Sun Night-Mon
Thunderstorms
65°18°
40%
Mon Night
Rain Showers
62°17°
40%
Tuesday
Rain Showers
78°26°
20%

Day: Mostly cloudy with a chance of showers and thunderstorms this morning, then mostly sunny with a slight chance of showers and thunderstorms this afternoon. Highs in the lower 90s. Northeast winds around 5 mph. Chance of rain 40 percent. Heat index values up to 104 this afternoon.

Night: Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear after midnight. Humid with lows in the lower 70s. Light and variable winds, becoming south around 5 mph after midnight. Chance of rain 20 percent. Heat index values up to 102 early in the evening.

Warren, MO

Today
Thunderstorms
92°/ 75° 33°/ 24°
30%
Thursday
Sunny
95°/ 70° 35°/ 21°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Saturday
Sunny
95°/ 68° 35°/ 20°
50%
Sunday
Rain Showers
88°/ 65° 31°/ 18°
50%
Monday
Thunderstorms
82°/ 62° 28°/ 17°
40%
Tuesday
Rain Showers
80°27°
20%

Day: Mostly sunny. A chance of showers and thunderstorms, mainly this morning. Highs in the lower 90s. Northeast winds around 5 mph. Chance of rain 30 percent. Heat index values up to 105 this afternoon.

Night: Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear after midnight. Humid with lows in the mid 70s. Light and variable winds, becoming south around 5 mph after midnight. Chance of rain 20 percent. Heat index values up to 102 early in the evening.

Clinton, IL

Today
Thunderstorms
95°/ 75° 35°/ 24°
20%
Thursday
Sunny
98°/ 72° 37°/ 22°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Saturday
Sunny
98°/ 72° 37°/ 22°
20%
Sun Night
Rain Showers
68°20°
20%
Monday
Thunderstorms
88°/ 65° 31°/ 18°
30%
Tuesday
Rain Showers
85°29°
20%

Day: Partly sunny with a slight chance of showers and thunderstorms. Hot with highs in the mid 90s. Southwest winds around 5 mph. Chance of rain 20 percent. Heat index values up to 106.

Night: Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the mid 70s. South winds around 5 mph. Chance of rain 20 percent. Heat index values up to 102 early in the evening.

Randolph, IL

Today
Thunderstorms
95°/ 75° 35°/ 24°
20%
Thursday
Sunny
98°/ 72° 37°/ 22°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Saturday
Sunny
98°/ 72° 37°/ 22°
20%
Sun-Sun Night
Rain Showers
95°35°
20%
Monday
Thunderstorms
88°/ 62° 31°/ 17°
30%
Tuesday
Rain Showers
85°29°
30%

Day: Mostly sunny. A slight chance of showers and thunderstorms this afternoon. Hot with highs in the mid 90s. South winds around 5 mph. Chance of rain 20 percent. Heat index values up to 106.

Night: Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the mid 70s. South winds around 5 mph. Chance of rain 20 percent. Heat index values up to 101 early in the evening.

Bond, IL

Today
Thunderstorms
95°/ 75° 35°/ 24°
40%
Thursday
Sunny
95°/ 72° 35°/ 22°
0%
Friday
Sunny
92°/ 72° 33°/ 22°
0%
Saturday
Sunny
95°/ 72° 35°/ 22°
30%
Sunday
Thunderstorms
92°/ 68° 33°/ 20°
20%
Monday
Thunderstorms
85°/ 62° 29°/ 17°
30%
Tuesday
Rain Showers
82°28°
20%

Day: Mostly cloudy with a chance of showers and thunderstorms this morning, then mostly sunny with a slight chance of showers and thunderstorms this afternoon. Highs in the mid 90s. Southeast winds around 5 mph, becoming southwest around 5 mph this afternoon. Chance of rain 40 percent. Heat index values up to 105.

Night: Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Humid with lows in the mid 70s. South winds around 5 mph. Chance of rain 30 percent. Heat index values up to 102 early in the evening.

Washington, IL

Today
Thunderstorms
95°/ 75° 35°/ 24°
20%
Thursday
Sunny
98°/ 72° 37°/ 22°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Saturday
Sunny
98°/ 72° 37°/ 22°
20%
Sun Night
Rain Showers
68°20°
20%
Monday
Thunderstorms
88°/ 65° 31°/ 18°
30%
Tuesday
Rain Showers
85°29°
20%

Day: Partly sunny with a slight chance of showers and thunderstorms. Hot with highs in the mid 90s. Southwest winds around 5 mph. Chance of rain 20 percent. Heat index values up to 106.

Night: Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the mid 70s. South winds around 5 mph. Chance of rain 20 percent. Heat index values up to 102 early in the evening.

Washington, MO

Today
Thunderstorms
92°/ 75° 33°/ 24°
30%
Thursday
Thunderstorms
95°/ 72° 35°/ 22°
20%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Saturday
Sunny
95°/ 70° 35°/ 21°
20%
Sunday
Rain Showers
92°/ 65° 33°/ 18°
40%
Monday
Thunderstorms
85°/ 62° 29°/ 17°
40%
Tuesday
Rain Showers
80°27°
30%

Day: Mostly sunny. A chance of showers and thunderstorms this afternoon. Highs in the lower 90s. South winds around 5 mph. Chance of rain 30 percent. Heat index values up to 104.

Night: Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the mid 70s. South winds around 5 mph. Chance of rain 30 percent. Heat index values up to 100 early in the evening.

Adams, MO

Today
Thunderstorms
85°/ 72° 29°/ 22°
50%
Thursday
Thunderstorms
88°/ 68° 31°/ 20°
20%
Friday
Thunderstorms
88°/ 72° 31°/ 22°
20%
Saturday
Thunderstorms
90°/ 68° 32°/ 20°
70%
Sunday
Thunderstorms
82°/ 65° 28°/ 18°
50%
Monday
Thunderstorms
75°/ 60° 24°/ 16°
50%
Tuesday
Rain Showers
75°24°
30%

Day: Mostly cloudy with a chance of showers and thunderstorms this morning, then partly sunny with a slight chance of showers and thunderstorms this afternoon. Highs in the mid 80s. East winds around 5 mph. Chance of rain 50 percent.

Night: Partly cloudy. Humid with lows in the lower 70s. East winds around 5 mph, becoming southeast after midnight.

Montgomery, IL

Today
Thunderstorms
92°/ 72° 33°/ 22°
50%
Thursday
Sunny
95°/ 70° 35°/ 21°
20%
Friday
Thunderstorms
92°/ 70° 33°/ 21°
20%
Saturday
Sunny
95°/ 70° 35°/ 21°
50%
Sunday
Thunderstorms
90°/ 65° 32°/ 18°
50%
Monday
Thunderstorms
85°/ 62° 29°/ 17°
30%
Tuesday
Rain Showers
82°28°
20%

Day: Partly sunny. A chance of showers and thunderstorms, mainly this morning. Highs in the lower 90s. Southeast winds around 5 mph, becoming west around 5 mph this afternoon. Chance of rain 50 percent. Heat index values up to 102.

Night: Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the lower 70s. East winds around 5 mph, becoming south after midnight. Chance of rain 20 percent. Heat index values up to 100 early in the evening.

Saint Francois, MO

Today
Thunderstorms
95°/ 72° 35°/ 22°
20%
Thursday
Sunny
95°/ 72° 35°/ 22°
0%
Friday
Sunny
95°/ 70° 35°/ 21°
0%
Sat-Sat Night
Cloudy
95°35°
0%
Sun-Sun Night
Rain Showers
95°35°
20%
Mon-Mon Night
Thunderstorms
88°31°
50%
Tuesday
Rain Showers
82°28°
40%

Day: Sunny. A slight chance of showers and thunderstorms this afternoon. Hot with highs in the mid 90s. South winds around 5 mph. Chance of rain 20 percent. Heat index values up to 104.

Night: Mostly clear. Lows in the lower 70s. South winds around 5 mph.

Sainte Genevieve, MO

Today
Thunderstorms
95°/ 75° 35°/ 24°
20%
Thursday
Sunny
98°/ 72° 37°/ 22°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Saturday
Sunny
98°/ 72° 37°/ 22°
20%
Sun-Sun Night
Rain Showers
95°35°
20%
Monday
Thunderstorms
88°/ 62° 31°/ 17°
30%
Tuesday
Rain Showers
85°29°
30%

Day: Mostly sunny. A slight chance of showers and thunderstorms this afternoon. Hot with highs in the mid 90s. South winds around 5 mph. Chance of rain 20 percent. Heat index values up to 106.

Night: Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the mid 70s. South winds around 5 mph. Chance of rain 20 percent. Heat index values up to 101 early in the evening.

Trending Headlines

Trending Entertainment Headlines

St. John Radar Loop

Use the map search tool if you want to place a location marker on the radar map...

St. John Quick Facts

National Two Day Weather Forecast


E-mail the St. John Weather Forecast

Voice your opinion or tell us about page issues...