Shell Reservoir, MT Weather Forecast & Current Conditions

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Shell Reservoir Weather Map
UTC Time: 9/21/2026, 07:48
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
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Shell Reservoir, MT Regional Weather

Expires:202609210800;;805983
ASUS45 KTFX 210710
RWRMT 
Montana Regional Weather Roundup
National Weather Service Great Falls MT
100 AM MDT MON SEP 21 2026

NOTE: "FAIR" indicates few or no clouds below 12,000 feet with no
significant weather and/or obstructions to visibility.


MTZ028>42-056>058-210800-
Southcentral and southeast Montana
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
Baker          CLOUDY    53  52  96 E12       30.22                   
Big Timber     CLOUDY    52  52 100 CALM      30.23F                  
Billings       MOCLDY    55  53  93 NW5       30.20F                  
Forsyth        CLOUDY    57  57 100 NE5       30.17S                  
Hardin         CLOUDY    57  55  94 W3        30.17S                  
Harlowton      CLOUDY    54  53  96 S5        30.20S                  
Laurel         PTSUNNY   55  55 100 MISG      30.21S                  
Livingston     CLOUDY    50  46  86 S9        30.23S                  
Miles City     LGT RAIN  56  55  97 NE5       30.18S FOG              
$$

Regional Reports...Dakotas/MN
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
Williston      CLOUDY    53  50  89 E7        30.25S                  
Minot          CLOUDY    53  51  93 SE3       30.27F                  
Dickinson      CLOUDY    52  48  86 NE6       30.22S                  
Beach            N/A     52  52 100 E8        30.24F                  
Bowman         CLOUDY    52  52 100 E8        30.22F                  
Crosby         CLOUDY    52  52 100 E5        30.26S                  
Glen Ullin     CLOUDY    54  48  82 E5        30.23R                  
Hettinger      CLOUDY    52  50  93 E6        30.22S                  
Tioga          CLOUDY    52  52 100 E9        30.28S                  
Watford City   CLOUDY    54  54 100 E7        30.25F                  
Bismarck       CLOUDY    53  49  86 E6        30.25R                  
Grand Forks    PTCLDY    46  45  96 NW5       30.28R                  
Fargo          MOCLDY    48  45  89 E5        30.27R                  
Buffalo SD       N/A     52  52 100 E9        30.20S                  
Rapid City     CLOUDY    54  54 100 NE6       30.17S                  
Intl Falls     MOCLDY    43  40  89 SE6       30.32S                  
Duluth         MOCLDY    44  43  96 E8        30.31S                  
Minneapolis    MOCLDY    54  46  74 E10       30.23R                  
$$

Regional Reports...WY/CO/ID/WA/OR
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
Buffalo WY     CLOUDY    52  48  86 S3        30.22S                  
Cody           CLEAR     53  47  79 VRB5      30.26F                  
Gillette       CLOUDY    54  53  97 NW7       30.19S                  
Powell         FAIR      50  45  81 S3        30.23S                  
Sheridan       PTCLDY    52  50  93 W8        30.20S                  
Yellowstone La   N/A     32  32 100 CALM      30.36F                  
Boise          CLEAR     64  46  52 SE8       30.08R                  
Couer d'Alene  CLEAR     53  46  77 E5        30.07S                  
Idaho Falls    CLEAR     48  45  89 CALM      30.22S                  
Salmon         CLEAR     49  45  86 CALM      30.21R                  
Spokane        CLEAR     63  38  39 CALM      30.05S                  
Seattle        CLEAR     56  51  84 N7        30.00F                  
Portland       CLEAR     63  56  78 NW5       29.97R                  
$$

Other Reports
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
Atlanta        PTCLDY    73  65  75 E5        29.99S                  
Anchorage      MOCLDY    46  45  93 CALM      29.22R                  
Boston         CLOUDY    58  57  97 N13       30.01R FOG              
Chicago        DRIZZLE   61  54  77 NE16G32   30.09S                  
Fairbanks      LGT RAIN  46  45  93 CALM      29.27R                  
Great Falls    CLEAR     52  43  71 SE3       30.13S                  
Houston        MOCLDY    79  76  90 SE5       29.93F                  
Las Vegas NV   MOCLDY    82  24  12 W5        29.91F                  
Phoenix AZ     MOCLDY    89  51  27 SW3       29.84R                  
Salt Lake City PTCLDY    60  43  53 CALM      30.16S                  
San Diego      MOCLDY    71  62  73 NW3       29.94F                  
San Francisco  CLOUDY    59  54  83 W9        29.96R                  
Washington Dul PTCLDY    71  66  84 N9        29.98R                  
$$

Regional Reports...Alberta
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
Calgary        CLEAR     52  41  66 NW5       30.02S                  
Fort McMurray  MOCLDY    54  48  82 NE3       29.87S                  
High Level     CLEAR     50  41  71 SW5       29.72R                  
Lethbridge     PTCLDY    54  45  71 S13       30.04S                  
Medicine Hat   CLEAR     61  50  67 S13       30.05S                  
Pincher Creek  CLEAR     52  41  66 W10       30.08S                  
Fort Smith NWT CLEAR     54  45  71 S6        29.68R                  
$$

Regional Reports...Saskatchewan
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
Estevan        CLOUDY    50  48  93 E7        30.27R                  
Prince Albert  CLEAR     55  50  82 S8        30.09F                  
Regina         CLEAR     46  45  93 SE8       30.23F                  
Saskatoon      CLEAR     55  52  88 S12G18    30.10S                  
Swift Current  CLEAR     52  50  93 S16G24    30.13F                  
$$
  

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

Shell Reservoir, MT

Tonight
Rain Showers
50°10°
40%
Monday
Rain Showers
65°/ 48° 18°/
30%
Tuesday
Partly Cloudy
75°/ 52° 24°/ 11°
40%
Wednesday
Thunderstorms
78°/ 50° 26°/ 10°
30%
Thursday
Sunny
82°/ 58° 28°/ 14°
0%
Friday
Sunny
85°/ 55° 29°/ 13°
0%
Saturday
Sunny
75°/ 48° 24°/
0%
Sunday
Rain Showers
72°22°
20%

Night: Cloudy with a 40 percent chance of rain showers. Patchy fog. Lows around 50. East winds 5 to 10 mph.

Miles City, MT

Tonight
Mostly Cloudy
50°10°
0%
Monday
Rain Showers
68°/ 48° 20°/
20%
Tuesday
Sunny
75°/ 52° 24°/ 11°
20%
Wednesday
Thunderstorms
78°/ 50° 26°/ 10°
50%
Thursday
Sunny
85°/ 58° 29°/ 14°
0%
Friday
Sunny
85°/ 55° 29°/ 13°
0%
Saturday
Sunny
72°/ 48° 22°/
20%
Sunday
Sunny
68°20°
0%

Night: Mostly cloudy. Patchy fog. Lows around 50. East winds 5 to 10 mph.

Lame Deer, MT

Tonight
Rain Showers
48°
30%
Monday
Rain Showers
72°/ 45° 22°/
30%
Tuesday
Sunny
80°/ 50° 27°/ 10°
40%
Wednesday
Rain Showers
80°/ 48° 27°/
20%
Thursday
Sunny
85°/ 55° 29°/ 13°
0%
Friday
Sunny
88°/ 52° 31°/ 11°
0%
Saturday
Sunny
75°/ 45° 24°/
0%
Sunday
Sunny
72°22°
0%

Night: Mostly cloudy. A 30 percent chance of rain showers late in the evening. Patchy fog late in the evening, then areas of fog overnight. Lows in the upper 40s. North winds 5 to 10 mph.

Colstrip, MT

Tonight
Mostly Cloudy
48°
0%
Monday
Partly Cloudy
70°/ 45° 21°/
0%
Tuesday
Sunny
78°/ 50° 26°/ 10°
20%
Wednesday
Rain Showers
78°/ 50° 26°/ 10°
30%
Thursday
Sunny
85°/ 55° 29°/ 13°
0%
Friday
Sunny
85°/ 52° 29°/ 11°
0%
Saturday
Sunny
72°/ 45° 22°/
0%
Sunday
Rain Showers
68°20°
20%

Night: Mostly cloudy. Patchy fog. Lows in the upper 40s. East winds 5 to 10 mph.

Ekalaka, MT

Tonight
Rain Showers
48°
60%
Monday
Rain Showers
62°/ 45° 17°/
20%
Tuesday
Partly Cloudy
70°/ 50° 21°/ 10°
50%
Wednesday
Thunderstorms
75°/ 50° 24°/ 10°
40%
Thursday
Sunny
80°/ 55° 27°/ 13°
0%
Friday
Sunny
82°/ 55° 28°/ 13°
0%
Saturday
Sunny
75°/ 48° 24°/
0%
Sunday
Sunny
68°20°
0%

Night: Patchy fog through the night. Rain showers likely late in the evening. Chance of rain showers overnight, then slight chance of rain showers after 3 am. Lows in the upper 40s. East winds 5 to 15 mph. Chance of precipitation 60 percent.

Hardin, MT

Tonight
Rain Showers
45°
30%
Monday
Partly Cloudy
72°/ 42° 22°/
0%
Tuesday
Partly Cloudy
78°/ 48° 26°/
40%
Wednesday
Rain Showers
78°/ 48° 26°/
30%
Thursday
Sunny
85°/ 50° 29°/ 10°
0%
Friday
Sunny
85°/ 48° 29°/
0%
Saturday
Sunny
72°/ 42° 22°/
0%
Sunday
Rain Showers
68°20°
20%

Night: Mostly cloudy. A 30 percent chance of rain showers late in the evening. Areas of fog through the night. Lows in the mid 40s. Southwest winds 5 to 10 mph.

Pryor, MT

Tonight
Rain Showers
45°
30%
Monday
Partly Cloudy
72°/ 45° 22°/
0%
Tuesday
Sunny
78°/ 48° 26°/
30%
Wednesday
Rain Showers
78°/ 48° 26°/
30%
Thursday
Sunny
85°/ 52° 29°/ 11°
0%
Friday
Sunny
85°/ 50° 29°/ 10°
0%
Saturday
Sunny
75°/ 42° 24°/
0%
Sunday
Sunny
70°21°
0%

Night: Mostly cloudy. A 30 percent chance of rain showers late in the evening. Areas of fog through the night. Lows in the mid 40s. Southwest winds 5 to 10 mph.

Gillette, WY

Overnight
Rain Showers
48°
40%
Monday
Rain Showers
68°/ 48° 20°/
20%
Tuesday
Cloudy
75°/ 52° 24°/ 11°
20%
Wednesday
Cloudy
75°/ 48° 24°/
0%
Thursday
Cloudy
82°/ 55° 28°/ 13°
0%
Friday
Sunny
82°/ 52° 28°/ 11°
0%
Saturday
Sunny
75°/ 48° 24°/
0%
Sunday
Cloudy
72°22°
0%

Night: Mostly cloudy with a 40 percent chance of showers. Lows in the upper 40s. North winds around 5 mph.

Sheridan, WY

Tonight
Rain Showers
42°
50%
Monday
Rain Showers
68°/ 40° 20°/
20%
Tuesday
Sunny
75°/ 48° 24°/
20%
Wednesday
Rain Showers
75°/ 45° 24°/
30%
Thursday
Sunny
82°/ 48° 28°/
0%
Friday
Sunny
82°/ 48° 28°/
0%
Saturday
Sunny
75°/ 42° 24°/
0%
Sunday
Sunny
70°21°
0%

Night: Mostly cloudy. Chance of rain showers late in the evening, then slight chance of rain showers overnight. Patchy fog late in the evening. Areas of fog overnight. Lows in the lower 40s. West winds 5 to 10 mph. Chance of precipitation 50 percent.

Hysham, MT

Tonight
Mostly Cloudy
48°
0%
Monday
Partly Cloudy
70°/ 45° 21°/
0%
Tuesday
Sunny
75°/ 52° 24°/ 11°
20%
Wednesday
Rain Showers
78°/ 52° 26°/ 11°
20%
Thursday
Sunny
82°/ 55° 28°/ 13°
0%
Friday
Sunny
82°/ 52° 28°/ 11°
0%
Saturday
Sunny
72°/ 48° 22°/
0%
Sunday
Rain Showers
68°20°
20%

Night: Mostly cloudy. Patchy fog late in the evening, then areas of fog overnight. Lows in the upper 40s. East winds 5 to 10 mph.

Baker, MT

Tonight
Rain Showers
45°
30%
Monday
Rain Showers
65°/ 42° 18°/
20%
Tuesday
Partly Cloudy
72°/ 48° 22°/
40%
Wednesday
Thunderstorms
78°/ 48° 26°/
60%
Thursday
Sunny
82°/ 52° 28°/ 11°
0%
Friday
Sunny
82°/ 52° 28°/ 11°
0%
Saturday
Sunny
75°/ 45° 24°/
20%
Sunday
Rain Showers
70°21°
20%

Night: Mostly cloudy. Chance of rain showers late in the evening, then slight chance of rain showers overnight. Patchy fog through the night. Lows in the mid 40s. East winds 5 to 15 mph. Chance of precipitation 30 percent.

Terry, MT

Tonight
Rain Showers
48°
20%
Monday
Sunny
70°/ 48° 21°/
0%
Tuesday
Partly Cloudy
78°/ 52° 26°/ 11°
0%
Wednesday
Thunderstorms
78°/ 50° 26°/ 10°
N/A
Thu Night
Clear
55°13°
0%
Fri Night
Clear
55°13°
0%
Saturday
Sunny
75°/ 45° 24°/
0%

Night: Mostly cloudy. A slight chance of showers this evening. Lows in the upper 40s. East wind 5 to 10 mph. Chance of rain 20 percent.

Moorcroft, WY

Overnight
Rain Showers
45°
20%
Monday
Rain Showers
65°/ 42° 18°/
50%
Tuesday
Cloudy
72°/ 48° 22°/
20%
Wednesday
Cloudy
78°/ 45° 26°/
0%
Thursday
Cloudy
82°/ 52° 28°/ 11°
0%
Friday
Cloudy
82°/ 50° 28°/ 10°
0%
Saturday
Sunny
78°/ 45° 26°/
0%
Sunday
Cloudy
72°22°
0%

Night: Mostly cloudy with a 20 percent chance of showers. Areas of fog. Lows in the mid 40s. Northeast winds around 5 mph.

Custer, MT

Tonight
Mostly Cloudy
48°
0%
Monday
Partly Cloudy
72°/ 45° 22°/
0%
Tuesday
Partly Cloudy
78°/ 52° 26°/ 11°
30%
Wednesday
Rain Showers
80°/ 52° 27°/ 11°
20%
Thursday
Sunny
82°/ 52° 28°/ 11°
0%
Friday
Sunny
85°/ 52° 29°/ 11°
0%
Saturday
Sunny
72°/ 48° 22°/
20%
Sunday
Rain Showers
68°20°
20%

Night: Mostly cloudy. Patchy fog late in the evening, then areas of fog overnight. Lows in the upper 40s. Northeast winds 5 to 10 mph.

Buffalo, SD

Overnight
Rain Showers
48°
50%
Monday
Rain Showers
62°/ 45° 17°/
40%
Tuesday
Cloudy
68°/ 50° 20°/ 10°
20%
Wednesday
Thunderstorms
75°/ 52° 24°/ 11°
50%
Thursday
Cloudy
82°/ 55° 28°/ 13°
0%
Friday
Cloudy
80°/ 55° 27°/ 13°
0%
Saturday
Cloudy
75°/ 48° 24°/
0%
Sunday
Cloudy
68°20°
0%

Night: Cloudy with a 50 percent chance of showers. Patchy fog. Lows in the upper 40s. East winds 5 to 10 mph.

Burgess Jct, WY

Tonight
Mostly Cloudy
30°-1°
0%
Monday
Rain Showers
55°/ 32° 13°/
40%
Tuesday
Sunny
62°/ 38° 17°/
50%
Wednesday
Rain Showers
62°/ 38° 17°/
40%
Thursday
Sunny
65°/ 42° 18°/
0%
Friday
Sunny
68°/ 42° 20°/
0%
Saturday
Sunny
62°/ 35° 17°/
20%
Sunday
Rain Showers
60°16°
20%

Night: Mostly cloudy. Patchy fog. Lows around 30. Southwest winds 5 to 10 mph.

Sundance, WY

Overnight
Rain Showers
45°
40%
Monday
Thunderstorms
62°/ 45° 17°/
70%
Tuesday
Cloudy
68°/ 52° 20°/ 11°
20%
Wednesday
Cloudy
72°/ 50° 22°/ 10°
0%
Thursday
Cloudy
78°/ 55° 26°/ 13°
0%
Friday
Rain Showers
78°/ 52° 26°/ 11°
20%
Saturday
Sunny
72°/ 48° 22°/
0%
Sunday
Cloudy
70°21°
0%

Night: Cloudy with a 40 percent chance of showers. Widespread fog. Lows in the mid 40s. Northeast winds around 5 mph.

Jordan, MT

Tonight
Rain Showers
48°
20%
Monday
Partly Cloudy
68°/ 48° 20°/
0%
Tuesday
Partly Cloudy
78°/ 50° 26°/ 10°
0%
Wednesday
Sunny
78°/ 52° 26°/ 11°
0%
Thursday
Clear
52°11°
0%
Friday
Clear
52°/ 52° 11°/ 11°
0%
Sat Night
Rain Showers
45°
N/A
Sunday
Partly Cloudy
65°18°
0%

Night: Mostly cloudy. A slight chance of showers this evening. Lows in the upper 40s. East wind 5 to 10 mph. Chance of rain 20 percent.

Buffalo, WY

Tonight
Rain Showers
45°
30%
Monday
Mostly Cloudy
65°/ 48° 18°/
0%
Tuesday
Sunny
75°/ 50° 24°/ 10°
30%
Wednesday
Sunny
75°/ 50° 24°/ 10°
0%
Thursday
Sunny
80°/ 52° 27°/ 11°
0%
Friday
Sunny
82°/ 52° 28°/ 11°
0%
Saturday
Sunny
75°/ 50° 24°/ 10°
0%
Sunday
Cloudy
75°24°
0%

Night: Mostly cloudy with a 30 percent chance of showers. Areas of fog after midnight. Lows in the mid 40s. Northwest winds around 10 mph.

Colony, WY

Overnight
Rain Showers
48°
40%
Monday
Rain Showers
62°/ 45° 17°/
40%
Tuesday
Cloudy
72°/ 50° 22°/ 10°
20%
Wednesday
Thunderstorms
78°/ 50° 26°/ 10°
20%
Thursday
Cloudy
80°/ 52° 27°/ 11°
0%
Friday
Cloudy
82°/ 52° 28°/ 11°
0%
Saturday
Sunny
75°/ 48° 24°/
0%
Sunday
Cloudy
72°22°
0%

Night: Cloudy with a 40 percent chance of showers. Widespread fog. Lows in the upper 40s. East winds 5 to 10 mph.

Names listed above may include county names.

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