St Marys, MO 14 Day Weather

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St Marys MO Weather - Clear - 76°F
Clear
76°F
Updated 7:33 am
Feels Like 82°F
Humidity 84%
Wind N 0 mph
Barometer  30.16 in
Dew Point 71°F
St Marys MO Weather - Clear - 24°C
Clear
24°C
Updated 7:33 am
Feels Like 28°C
Humidity 84%
Wind N 0 km/h
Barometer  102.1 kPa
Dew Point 22°C
St Marys, MO Weather and Current Conditionsst marys mo weather forecast

St Marys, MO Weather Forecast

St Marys Missouri WeatherSt Marys, Missouri Weather Weather Forecast
14 Day API St Marys Weather Forecast. Note: Our 7 day St Marys weather forecast is our most reliable, and specific forecast. This model should only be used as a probable scenario. Forecasting more than 7 days ahead is challenging.
St Marys, MO Weather Forecast Dated: 733 AM Fri Sep 18 2026
Expect a very warm period with a mix of sun and clouds and mostly dry weather over the coming period. moderate humidity and no major pressure swings will dominate.

Friday, September 18, 2026

Mid-Morning
St Marys Weather - 2026-09-18 - Morning - Sunny
80°F 27°C
Sunny
Mid-Afternoon
St Marys Weather - 2026-09-18 - Afternoon - Sunny
97°F 36°C
Sunny
Early-Evening
St Marys Weather - 2026-09-18 - Evening - Sunny
92°F 34°C
Sunny
Sizzling hot near 97°F 36°C with a heat index reaching 100°F 38°C, sunny throughout the day, with lower humidity and barometric pressure falling.

Saturday, September 19, 2026

Mid-Morning
St Marys Weather - 2026-09-19 - Morning - Sunny
84°F 29°C
Sunny
Mid-Afternoon
St Marys Weather - 2026-09-19 - Afternoon - Partly Cloudy
97°F 36°C
Partly Cloudy
Early-Evening
St Marys Weather - 2026-09-19 - Evening - Overcast
93°F 34°C
Overcast
Hot and sweltering around 97°F 36°C, sunny in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and steady pressure. Winds turning from the WSW to the ESE at 4 mph 7 km/h.

Sunday, September 20, 2026

Mid-Morning
St Marys Weather - 2026-09-20 - Morning - Overcast
81°F 27°C
Overcast
Mid-Afternoon
St Marys Weather - 2026-09-20 - Afternoon - Overcast
94°F 35°C
Overcast
Early-Evening
St Marys Weather - 2026-09-20 - Evening - Cloudy
86°F 30°C
Cloudy
Sizzling hot with 94°F 35°C, overcast through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds switching from the W to the NE at 8 mph 13 km/h.

Monday, September 21, 2026

Mid-Morning
St Marys Weather - 2026-09-21 - Morning - Scattered Showers
73°F 23°C
Scattered Showers
Mid-Afternoon
St Marys Weather - 2026-09-21 - Afternoon - Scattered Showers
84°F 29°C
Scattered Showers
Early-Evening
St Marys Weather - 2026-09-21 - Evening - Sunny
74°F 24°C
Sunny
Warm temperatures up to 84°F 29°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds moving from the E to the N at 12 mph 19 km/h.

Tuesday, September 22, 2026

Mid-Morning
St Marys Weather - 2026-09-22 - Morning - Overcast
64°F 18°C
Overcast
Mid-Afternoon
St Marys Weather - 2026-09-22 - Afternoon - Scattered Showers
66°F 19°C
Scattered Showers
Early-Evening
St Marys Weather - 2026-09-22 - Evening - Scattered Showers
63°F 18°C
Scattered Showers
Refreshing around 66°F 19°C, scattered downpours possible, with steady humidity and steady pressure. Winds swinging from the NNW to the N at 7 mph 12 km/h.

Wednesday, September 23, 2026

Mid-Morning
St Marys Weather - 2026-09-23 - Morning - Sunny
61°F 16°C
Sunny
Mid-Afternoon
St Marys Weather - 2026-09-23 - Afternoon - Partly Cloudy
77°F 25°C
Partly Cloudy
Early-Evening
St Marys Weather - 2026-09-23 - Evening - Overcast
72°F 23°C
Overcast
Pleasant near 77°F 25°C, sunny in the morning, overcast in the afternoon, and cloudy this evening, with lower humidity and steady pressure.

Thursday, September 24, 2026

Mid-Morning
St Marys Weather - 2026-09-24 - Morning - Overcast
62°F 17°C
Overcast
Mid-Afternoon
St Marys Weather - 2026-09-24 - Afternoon - Overcast
73°F 23°C
Overcast
Early-Evening
St Marys Weather - 2026-09-24 - Evening - Overcast
69°F 21°C
Overcast
Comfortable with temperatures reaching 73°F 23°C, overcast throughout the day, with lower humidity and steady pressure. Winds shifting from the NNE to the SE at 7 mph 11 km/h.

Friday, September 25, 2026

Mid-Morning
St Marys Weather - 2026-09-25 - Morning - Cloudy
66°F 19°C
Cloudy
Mid-Afternoon
St Marys Weather - 2026-09-25 - Afternoon - Overcast
80°F 27°C
Overcast
Early-Evening
St Marys Weather - 2026-09-25 - Evening - Overcast
74°F 23°C
Overcast
Quite warm around 80°F 27°C, cloudy in the morning, overcast in the afternoon, and cloudy this evening, with lower humidity and barometric pressure falling. Winds turning from the NNE to the ENE at 9 mph 14 km/h.

Saturday, September 26, 2026

Mid-Morning
St Marys Weather - 2026-09-26 - Morning - Overcast
61°F 16°C
Overcast
Mid-Afternoon
St Marys Weather - 2026-09-26 - Afternoon - Overcast
67°F 19°C
Overcast
Early-Evening
St Marys Weather - 2026-09-26 - Evening - Overcast
67°F 20°C
Overcast
Refreshing around 67°F 19°C, overcast through the afternoon, turning cloudy this evening, with lower humidity and barometric pressure falling.

Sunday, September 27, 2026

Mid-Morning
St Marys Weather - 2026-09-27 - Morning - Sunny
67°F 19°C
Sunny
Mid-Afternoon
St Marys Weather - 2026-09-27 - Afternoon - Partly Cloudy
84°F 29°C
Partly Cloudy
Early-Evening
St Marys Weather - 2026-09-27 - Evening - Sunny
80°F 27°C
Sunny
Very warm with a high of 84°F 29°C, sunny in the morning, partly cloudy in the afternoon, and sunny this evening, with steady humidity and barometric pressure falling.

Monday, September 28, 2026

Mid-Morning
St Marys Weather - 2026-09-28 - Morning - Sunny
77°F 25°C
Sunny
Mid-Afternoon
St Marys Weather - 2026-09-28 - Afternoon - Sunny
91°F 33°C
Sunny
Early-Evening
St Marys Weather - 2026-09-28 - Evening - Sunny
85°F 30°C
Sunny
Very hot with temperatures reaching 91°F 33°C, cloudy in the morning, sunny in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure. Winds switching from the S to the SSE at 9 mph 13 km/h.

Tuesday, September 29, 2026

Mid-Morning
St Marys Weather - 2026-09-29 - Morning - Sunny
74°F 23°C
Sunny
Mid-Afternoon
St Marys Weather - 2026-09-29 - Afternoon - Overcast
89°F 31°C
Overcast
Early-Evening
St Marys Weather - 2026-09-29 - Evening - Sunny
83°F 29°C
Sunny
Balmy with temperatures reaching 89°F 31°C, sunny in the morning, partly cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure. Winds moving from the SSE to the ESE at 6 mph 9 km/h.

Wednesday, September 30, 2026

Mid-Morning
St Marys Weather - 2026-09-30 - Morning - Partly Cloudy
76°F 24°C
Partly Cloudy
Mid-Afternoon
St Marys Weather - 2026-09-30 - Afternoon - Overcast
91°F 33°C
Overcast
Early-Evening
St Marys Weather - 2026-09-30 - Evening - Sunny
83°F 29°C
Sunny
Sizzling hot with 91°F 33°C, sunny in the morning, becoming partly cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds swinging from the W to the NNW at 8 mph 12 km/h.

Thursday, October 1, 2026

Mid-Morning
St Marys Weather - 2026-10-01 - Morning - Overcast
63°F 17°C
Overcast
Mid-Afternoon
St Marys Weather - 2026-10-01 - Afternoon - Overcast
69°F 21°C
Overcast
Early-Evening
St Marys Weather - 2026-10-01 - Evening - Cloudy
61°F 16°C
Cloudy
Mild temperatures up to 69°F 21°C, overcast throughout the day, with lower humidity and steady pressure. Winds shifting from the NNW to the N at 13 mph 21 km/h. Gusts up to 21 mph 34 km/h.

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Weather by the Numbers

Fri, 18th
St Marys MO Weather - Friday, Sep 18, 2026 - Sunny
Hi: 97°F 36°C
Lo: 76°F 24°C
Sunrise 06:45 AM
Sunset 07:05 PM
Wind SW 2 mph3 km/h
Dew Point 67°F19°C
uv Index 7
Barometric Pressure 30.09 in1019 mb
POP 1% *
Humidity 43%
Sat, 19th
St Marys MO Weather - Saturday, Sep 19, 2026 - Sunny
Hi: 97°F 36°C
Lo: 80°F 27°C
Sunrise 06:46 AM
Sunset 07:03 PM
Wind W 8 mph13 km/h
Dew Point 57°F14°C
uv Index 6
Barometric Pressure 29.94 in1014 mb
POP 1% *
Humidity 29%
Sun, 20th
St Marys MO Weather - Sunday, Sep 20, 2026 - Overcast
Hi: 94°F 35°C
Lo: 77°F 25°C
Sunrise 06:47 AM
Sunset 07:01 PM
Wind WNW 8 mph12 km/h
Dew Point 56°F13°C
uv Index 4
Barometric Pressure 29.85 in1011 mb
POP 9% *
Humidity 32%
Mon, 21st
St Marys MO Weather - Monday, Sep 21, 2026 - Sunny
Hi: 86°F 30°C
Lo: 67°F 19°C
Sunrise 06:48 AM
Sunset 07:00 PM
Wind NNW 5 mph8 km/h
Dew Point 64°F18°C
uv Index 5
Barometric Pressure 29.91 in1013 mb
POP 2% *
Humidity 52%
Tue, 22nd
St Marys MO Weather - Tuesday, Sep 22, 2026 - Overcast
Hi: 68°F 20°C
Lo: 60°F 16°C
Sunrise 06:49 AM
Sunset 06:58 PM
Wind NNW 10 mph17 km/h
Dew Point 55°F13°C
uv Index 4
Barometric Pressure 30.09 in1019 mb
POP 16% *
Humidity 64%
Wed, 23rd
St Marys MO Weather - Wednesday, Sep 23, 2026 - Sunny
Hi: 78°F 25°C
Lo: 55°F 13°C
Sunrise 06:50 AM
Sunset 06:56 PM
Wind ESE 6 mph9 km/h
Dew Point 53°F12°C
uv Index 6
Barometric Pressure 30.21 in1023 mb
POP 5% *
Humidity 53%
Thu, 24th
St Marys MO Weather - Thursday, Sep 24, 2026 - Overcast
Hi: 74°F 23°C
Lo: 60°F 15°C
Sunrise 06:51 AM
Sunset 06:55 PM
Wind N 7 mph11 km/h
Dew Point 52°F11°C
uv Index 4
Barometric Pressure 30.3 in1026 mb
POP 14% *
Humidity 57%
Fri, 25th
St Marys MO Weather - Friday, Sep 25, 2026 - Partly Cloudy
Hi: 81°F 27°C
Lo: 60°F 16°C
Sunrise 06:52 AM
Sunset 06:53 PM
Wind NE 6 mph9 km/h
Dew Point 54°F12°C
uv Index 6
Barometric Pressure 30.27 in1025 mb
POP 9% *
Humidity 50%
Sat, 26th
St Marys MO Weather - Saturday, Sep 26, 2026 - Overcast
Hi: 68°F 20°C
Lo: 57°F 14°C
Sunrise 06:53 AM
Sunset 06:52 PM
Wind ESE 6 mph10 km/h
Dew Point 41°F5°C
uv Index 4
Barometric Pressure 30.21 in1023 mb
POP 10% *
Humidity 41%
Sun, 27th
St Marys MO Weather - Sunday, Sep 27, 2026 - Sunny
Hi: 85°F 30°C
Lo: 61°F 16°C
Sunrise 06:53 AM
Sunset 06:50 PM
Wind SSE 8 mph13 km/h
Dew Point 35°F2°C
uv Index 7
Barometric Pressure 29.97 in1015 mb
POP 3% *
Humidity 23%
Mon, 28th
St Marys MO Weather - Monday, Sep 28, 2026 - Overcast
Hi: 91°F 33°C
Lo: 72°F 22°C
Sunrise 06:54 AM
Sunset 06:48 PM
Wind S 12 mph19 km/h
Dew Point 48°F9°C
uv Index 7
Barometric Pressure 29.85 in1011 mb
POP 2% *
Humidity 27%
Tue, 29th
St Marys MO Weather - Tuesday, Sep 29, 2026 - Sunny
Hi: 90°F 32°C
Lo: 69°F 20°C
Sunrise 06:55 AM
Sunset 06:47 PM
Wind SSE 8 mph13 km/h
Dew Point 37°F3°C
uv Index 7
Barometric Pressure 29.88 in1012 mb
POP 5% *
Humidity 20%
Wed, 30th
St Marys MO Weather - Wednesday, Sep 30, 2026 - Sunny
Hi: 92°F 33°C
Lo: 71°F 21°C
Sunrise 06:56 AM
Sunset 06:45 PM
Wind SSW 2 mph4 km/h
Dew Point 51°F10°C
uv Index 8
Barometric Pressure 29.83 in1010 mb
POP 5% *
Humidity 30%
Thu, 1st
St Marys MO Weather - Thursday, Oct 1, 2026 - Overcast
Hi: 71°F 22°C
Lo: 54°F 12°C
Sunrise 06:57 AM
Sunset 06:44 PM
Wind NNW 15 mph23 km/h
Dew Point 43°F6°C
uv Index 4
Barometric Pressure 30.03 in1017 mb
POP 10% *
Humidity 42%
* POP = Probability of Precipitation. Data for 12:00 PM.