Simon Reservoir, MT Weather Forecast & Current Conditions

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Simon Reservoir Weather Map
UTC Time: 10/16/2026, 04:33
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Aeronautical Observation: Automated synoptic observations via NWS Gateway.
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Simon Reservoir, MT Regional Weather

Expires:202610160500;;173198
ASUS45 KTFX 160410
RWRMT 
Montana Regional Weather Roundup
National Weather Service Great Falls MT
1000 PM MDT THU OCT 15 2026

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


MTZ028>42-056>058-160500-
Southcentral and southeast Montana
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
Baker          PTCLDY    39  30  70 N13       30.68R WCI  31          
Big Timber     CLEAR     37  28  70 E8        30.74R WCI  31          
Billings       CLEAR     41  24  51 SE5       30.75R                  
Forsyth        CLEAR     38  28  66 NW6       30.73R WCI  34          
Hardin         PTCLDY    36  27  69 CALM      30.74R                  
Harlowton      FAIR      33  26  77 CALM      30.70R                  
Livingston     CLEAR     34  28  79 CALM      30.72R                  
Miles City     CLEAR     34  28  79 NW10      30.72R WCI  26          
$$

Regional Reports...Dakotas/MN
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
Williston      CLOUDY    40  30  67 N21       30.65R WCI  30          
Minot          CLOUDY    42  38  85 NW17G29   30.53R                  
Dickinson      CLOUDY    39  35  86 NW20G28   30.59R WCI  29          
Beach            N/A     34  30  86 NW9       30.67R WCI  26          
Bowman         CLOUDY    41  34  75 N21G28    30.62R                  
Crosby         CLOUDY    41  32  70 NW14G20   30.64R                  
Glen Ullin     CLOUDY    41  37  87 NW22G30   30.54R                  
Hettinger      CLOUDY    40  32  73 NW23G35   30.59R WCI  30          
Tioga          CLOUDY    39  37  93 NW15G25   30.64R WCI  31          
Watford City   CLOUDY    41  36  81 NW16G22   30.65R                  
Bismarck       CLOUDY    44  37  76 NW17G29   30.51R                  
Grand Forks    CLOUDY    45  40  82 N28G41    30.25R                  
Fargo          CLOUDY    45  40  82 N29G40    30.19R                  
Buffalo SD       N/A     40  29  64 NW31G43   30.61R WCI  28          
Rapid City     MOCLDY    43  24  47 NW36G54   30.59R                  
Intl Falls     CLOUDY    46  43  89 N12       30.02R                  
Duluth         LGT RAIN  46  45  96 NW5       29.91S                  
Minneapolis    PTCLDY    46  39  76 W12       30.01R                  
$$

Regional Reports...WY/CO/ID/WA/OR
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
Buffalo WY     CLEAR     35  19  52 N18       30.70R WCI  24          
Cody           CLEAR     38  26  62 NW5       30.75R WCI  34          
Gillette       CLEAR     34  21  59 NW13      30.71R WCI  25          
Powell         FAIR      32  21  64 W7        30.70R WCI  26          
Sheridan       CLEAR     36  22  56 W9        30.75R WCI  29          
Yellowstone La   N/A     27  21  78 CALM      30.74R                  
Boise          CLEAR     53  30  41 E6        30.52R                  
Couer d'Alene  CLEAR     48  38  68 E8        30.51S                  
Idaho Falls    CLEAR     40  34  79 N6        30.62R WCI  36          
Salmon         HAZE      39  32  76 CALM      30.64S VSB 1/2          
Spokane        CLEAR     56  38  50 E9        30.48F                  
Seattle        PTCLDY    59  49  69 CALM      30.26S                  
Portland       CLEAR     70  39  32 E9        30.22S                  
$$

Other Reports
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
Atlanta        CLEAR     72  62  71 SW6       30.09S                  
Anchorage      MOCLDY    43  39  87 E7        29.24R                  
Boston         MOCLDY    52  36  54 S9        30.16F                  
Chicago        CLOUDY    60  57  89 W13G23    29.78R                  
Fairbanks      MOCLDY    41  28  60 NE10      29.30F                  
Great Falls    CLEAR     39  30  70 SE7       30.63F WCI  34          
Houston        CLEAR     77  71  82 E7        30.03R                  
Las Vegas NV   CLEAR     74  38  27 NE17      30.23R                  
Phoenix AZ     CLEAR     80  42  25 NE13      29.95R                  
Salt Lake City CLEAR     54  44  69 CALM      30.55R                  
San Diego      CLEAR     73  63  70 CALM      29.93R                  
San Francisco  CLEAR     70  43  37 NW8       30.06S                  
Washington Dul CLOUDY    60  59  96 S3        30.09F FOG              
$$

Regional Reports...Alberta
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
Calgary        PTCLDY    41  30  65 S9        30.41F                  
Fort McMurray  CLOUDY    39  34  81 SE9       30.28F WCI  33          
High Level     CLEAR     37  30  75 CALM      30.02F                  
Lethbridge     PTCLDY    46  32  57 S18G32    30.49F                  
Medicine Hat   CLEAR     37  25  60 VRB2      30.57F                  
Pincher Creek  CLEAR     41  28  60 W5        30.49F                  
Fort Smith NWT CLOUDY    45  34  65 S12       30.07F                  
$$

Regional Reports...Saskatchewan
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
Estevan        CLOUDY    39  34  81 NW16G24   30.63R WCI  30          
Prince Albert  CLEAR     25  21  86 CALM      30.58S                  
Regina         CLEAR     25  21  86 W6        30.66R WCI  18          
Saskatoon      PTCLDY    30  21  69 SE8       30.59F WCI  23          
Swift Current  CLEAR     28  21  74 S10       30.62F WCI  19          
$$
  

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

Simon Reservoir, MT

Tonight
Clear
28°-2°
0%
Friday
Sunny
62°/ 40° 17°/ 4°
0%
Saturday
Sunny
75°/ 45° 24°/ 7°
0%
Sunday
Sunny
62°/ 42° 17°/ 6°
0%
Monday
Sunny
68°/ 45° 20°/ 7°
0%
Tuesday
Sunny
70°/ 45° 21°/ 7°
0%
Wednesday
Sunny
65°/ 45° 18°/ 7°
0%
Thursday
Rain Showers
65°18°
20%

Night: Mostly clear. Colder. Lows in the upper 20s. West winds 5 to 15 mph.

Lame Deer, MT

Tonight
Clear
25°-4°
0%
Friday
Sunny
65°/ 32° 18°/ 0°
0%
Saturday
Sunny
75°/ 42° 24°/ 6°
0%
Sunday
Sunny
65°/ 38° 18°/ 3°
0%
Monday
Sunny
70°/ 42° 21°/ 6°
0%
Tuesday
Sunny
72°/ 42° 22°/ 6°
0%
Wednesday
Sunny
65°/ 42° 18°/ 6°
0%
Thursday
Rain Showers
68°20°
20%

Night: Mostly clear. Colder. Lows in the mid 20s. Northwest winds 5 to 10 mph in the evening becoming light overnight.

Pryor, MT

Tonight
Clear
28°-2°
0%
Friday
Sunny
68°/ 38° 20°/ 3°
0%
Saturday
Sunny
75°/ 42° 24°/ 6°
0%
Sunday
Sunny
65°/ 38° 18°/ 3°
0%
Monday
Sunny
72°/ 42° 22°/ 6°
0%
Tuesday
Sunny
70°/ 42° 21°/ 6°
0%
Wednesday
Sunny
65°/ 42° 18°/ 6°
20%
Thursday
Rain Showers
65°18°
20%

Night: Mostly clear. Lows in the upper 20s. West winds 5 to 10 mph in the evening shifting to the southeast overnight.

Hardin, MT

Tonight
Clear
25°-4°
0%
Friday
Sunny
65°/ 32° 18°/ 0°
0%
Saturday
Sunny
75°/ 38° 24°/ 3°
0%
Sunday
Sunny
65°/ 35° 18°/ 2°
0%
Monday
Sunny
68°/ 38° 20°/ 3°
0%
Tuesday
Sunny
68°/ 40° 20°/ 4°
0%
Wednesday
Sunny
62°/ 40° 17°/ 4°
20%
Thursday
Rain Showers
65°18°
20%

Night: Mostly clear. Lows in the mid 20s. Southeast winds 5 to 10 mph.

Colstrip, MT

Tonight
Clear
28°-2°
0%
Friday
Sunny
62°/ 38° 17°/ 3°
0%
Saturday
Sunny
72°/ 42° 22°/ 6°
0%
Sunday
Sunny
62°/ 38° 17°/ 3°
0%
Monday
Sunny
65°/ 40° 18°/ 4°
0%
Tuesday
Sunny
68°/ 42° 20°/ 6°
0%
Wednesday
Sunny
62°/ 42° 17°/ 6°
20%
Thursday
Rain Showers
65°18°
20%

Night: Mostly clear. Colder. Patchy fog after 3 am. Lows in the upper 20s. Northwest winds 5 to 10 mph in the evening shifting to the southwest overnight.

Miles City, MT

Tonight
Clear
25°-4°
0%
Friday
Sunny
62°/ 35° 17°/ 2°
0%
Saturday
Sunny
72°/ 45° 22°/ 7°
0%
Sunday
Sunny
60°/ 40° 16°/ 4°
0%
Monday
Sunny
68°/ 42° 20°/ 6°
0%
Tuesday
Sunny
68°/ 42° 20°/ 6°
0%
Wednesday
Sunny
62°/ 45° 17°/ 7°
0%
Thursday
Rain Showers
65°18°
20%

Night: Mostly clear. Colder. Patchy fog after 3 am. Lows in the mid 20s. West winds 5 to 15 mph.

Sheridan, WY

Tonight
Clear
25°-4°
0%
Friday
Sunny
65°/ 35° 18°/ 2°
0%
Saturday
Sunny
75°/ 40° 24°/ 4°
0%
Sunday
Sunny
62°/ 35° 17°/ 2°
0%
Monday
Sunny
68°/ 40° 20°/ 4°
0%
Tuesday
Sunny
68°/ 42° 20°/ 6°
0%
Wednesday
Sunny
65°/ 42° 18°/ 6°
20%
Thursday
Rain Showers
65°18°
20%

Night: Mostly clear. Lows in the mid 20s. Northwest winds 5 to 15 mph in the evening becoming light overnight.

Gillette, WY

Tonight
Clear
25°-4°
0%
Friday
Sunny
58°/ 38° 14°/ 3°
0%
Saturday
Sunny
75°/ 42° 24°/ 6°
0%
Sunday
Sunny
62°/ 40° 17°/ 4°
0%
Monday
Sunny
68°/ 45° 20°/ 7°
0%
Tuesday
Sunny
72°/ 45° 22°/ 7°
0%
Wednesday
Sunny
65°/ 45° 18°/ 7°
0%
Thursday
Rain
68°20°
20%

Night: Clear. Widespread frost after midnight. Lows in the mid 20s. Northwest winds 10 to 20 mph with gusts up to 45 mph, becoming west 5 to 10 mph with gusts up to 20 mph after midnight.

Ekalaka, MT

Tonight
Clear
25°-4°
0%
Friday
Sunny
55°/ 38° 13°/ 3°
0%
Saturday
Sunny
75°/ 45° 24°/ 7°
0%
Sunday
Sunny
62°/ 38° 17°/ 3°
0%
Monday
Sunny
65°/ 42° 18°/ 6°
0%
Tuesday
Sunny
68°/ 45° 20°/ 7°
0%
Wednesday
Sunny
65°/ 45° 18°/ 7°
0%
Thursday
Rain Showers
65°18°
20%

Night: Mostly clear. Colder. Patchy fog after 3 am. Lows in the mid 20s. Northwest winds 10 to 20 mph in the evening decreasing to 5 to 10 mph overnight.

Burgess Junction, WY

Tonight
Clear
22°-6°
0%
Friday
Sunny
55°/ 35° 13°/ 2°
0%
Saturday
Sunny
65°/ 35° 18°/ 2°
0%
Sunday
Sunny
52°/ 32° 11°/ 0°
0%
Monday
Sunny
58°/ 35° 14°/ 2°
0%
Tuesday
Sunny
58°/ 35° 14°/ 2°
20%
Wednesday
Rain Showers
52°/ 35° 11°/ 2°
20%
Thursday
Snow Showers
55°13°
30%

Night: Mostly clear. Lows in the lower 20s. West winds 5 to 15 mph.

Buffalo, WY

Tonight
Clear
28°-2°
0%
Friday
Sunny
68°/ 40° 20°/ 4°
0%
Saturday
Sunny
78°/ 45° 26°/ 7°
0%
Sunday
Sunny
65°/ 40° 18°/ 4°
0%
Monday
Sunny
70°/ 45° 21°/ 7°
0%
Tuesday
Sunny
70°/ 45° 21°/ 7°
0%
Wednesday
Sunny
65°/ 45° 18°/ 7°
20%
Thursday
Rain Showers
65°18°
30%

Night: Clear. Widespread frost after midnight. Breezy with lows in the upper 20s. North winds 15 to 20 mph with gusts up to 30 mph, becoming west around 10 mph after midnight.

Hysham, MT

Tonight
Clear
28°-2°
0%
Friday
Sunny
62°/ 42° 17°/ 6°
0%
Saturday
Sunny
72°/ 45° 22°/ 7°
0%
Sunday
Sunny
62°/ 38° 17°/ 3°
0%
Monday
Sunny
65°/ 42° 18°/ 6°
0%
Tuesday
Sunny
65°/ 42° 18°/ 6°
0%
Wednesday
Sunny
60°/ 42° 16°/ 6°
20%
Thursday
Rain Showers
62°17°
20%

Night: Mostly clear. Lows in the upper 20s. Northwest winds 5 to 10 mph in the evening becoming light overnight.

Moorcroft, WY

Tonight
Clear
22°-6°
0%
Friday
Sunny
52°/ 35° 11°/ 2°
0%
Saturday
Sunny
72°/ 38° 22°/ 3°
0%
Sunday
Sunny
62°/ 38° 17°/ 3°
0%
Monday
Sunny
68°/ 42° 20°/ 6°
0%
Tuesday
Sunny
72°/ 45° 22°/ 7°
0%
Wednesday
Sunny
68°/ 45° 20°/ 7°
0%
Thursday
Rain
68°20°
20%

Night: Mostly clear. Widespread frost. Lows in the lower 20s. Northwest winds 10 to 15 mph. Gusts up to 35 mph, decreasing to 20 mph after midnight.

Custer, MT

Tonight
Clear
28°-2°
0%
Friday
Sunny
65°/ 42° 18°/ 6°
0%
Saturday
Sunny
75°/ 42° 24°/ 6°
0%
Sunday
Sunny
62°/ 38° 17°/ 3°
0%
Monday
Sunny
68°/ 42° 20°/ 6°
0%
Tuesday
Sunny
68°/ 42° 20°/ 6°
0%
Wednesday
Partly Cloudy
62°/ 42° 17°/ 6°
0%
Thursday
Rain Showers
65°18°
20%

Night: Mostly clear. Colder. Lows in the upper 20s. East winds 5 to 10 mph in the evening becoming light overnight.

Kaycee, WY

Tonight
Clear
28°-2°
0%
Friday
Sunny
65°/ 40° 18°/ 4°
0%
Saturday
Sunny
75°/ 42° 24°/ 6°
0%
Sunday
Sunny
65°/ 38° 18°/ 3°
0%
Monday
Sunny
68°/ 45° 20°/ 7°
0%
Tuesday
Sunny
68°/ 45° 20°/ 7°
0%
Wednesday
Sunny
65°/ 45° 18°/ 7°
20%
Thursday
Rain Showers
65°18°
30%

Night: Clear. Widespread frost after midnight. Breezy with lows in the upper 20s. North winds 15 to 20 mph with gusts up to 30 mph, becoming west around 10 mph after midnight.

Basin, WY

Tonight
Clear
30°-1°
0%
Friday
Sunny
60°/ 35° 16°/ 2°
0%
Saturday
Sunny
68°/ 40° 20°/ 4°
0%
Sunday
Sunny
65°/ 40° 18°/ 4°
0%
Monday
Sunny
65°/ 42° 18°/ 6°
0%
Tuesday
Sunny
65°/ 42° 18°/ 6°
0%
Wednesday
Cloudy
62°/ 42° 17°/ 6°
20%
Thursday
Rain Showers
62°17°
20%

Night: Clear. Widespread frost after midnight. Lows around 30. Northwest winds around 10 mph with gusts up to 20 mph, becoming south after midnight.

Sundance, WY

Tonight
Clear
22°-6°
0%
Friday
Sunny
48°/ 38° 9°/ 3°
0%
Saturday
Sunny
65°/ 45° 18°/ 7°
0%
Sunday
Sunny
58°/ 38° 14°/ 3°
0%
Monday
Sunny
62°/ 48° 17°/ 9°
0%
Tuesday
Sunny
68°/ 48° 20°/ 9°
0%
Wednesday
Sunny
65°/ 48° 18°/ 9°
0%
Thursday
Rain
65°18°
20%

Night: Mostly clear and breezy. Lows in the lower 20s. Northwest winds 15 to 25 mph with gusts up to 40 mph, diminishing to 5 to 10 mph with gusts up to 30 mph after midnight.

Billings, MT

Tonight
Clear
30°-1°
0%
Friday
Sunny
62°/ 45° 17°/ 7°
0%
Saturday
Sunny
72°/ 42° 22°/ 6°
0%
Sunday
Sunny
62°/ 38° 17°/ 3°
0%
Monday
Sunny
68°/ 42° 20°/ 6°
0%
Tuesday
Sunny
65°/ 42° 18°/ 6°
0%
Wednesday
Sunny
60°/ 42° 16°/ 6°
0%
Thursday
Rain Showers
62°17°
20%

Night: Mostly clear. Lows around 30. East winds 5 to 10 mph in the evening shifting to the south overnight.

Baker, MT

Tonight
Cloudy
22°-6°
0%
Friday
Sunny
58°/ 38° 14°/ 3°
0%
Saturday
Sunny
75°/ 42° 24°/ 6°
0%
Sunday
Sunny
62°/ 35° 17°/ 2°
0%
Monday
Sunny
68°/ 42° 20°/ 6°
0%
Tuesday
Sunny
70°/ 42° 21°/ 6°
0%
Wednesday
Sunny
65°/ 42° 18°/ 6°
0%
Thursday
Rain Showers
68°20°
20%

Night: Partly cloudy early in the evening then clearing. Colder. Areas of fog after 3 am. Lows in the lower 20s. Northwest winds 15 to 25 mph with gusts to around 40 mph in the evening decreasing to 5 to 10 mph overnight.

Ten Sleep, WY

Tonight
Clear
30°-1°
0%
Friday
Sunny
62°/ 38° 17°/ 3°
0%
Saturday
Sunny
70°/ 42° 21°/ 6°
0%
Sunday
Sunny
65°/ 40° 18°/ 4°
0%
Monday
Sunny
65°/ 42° 18°/ 6°
0%
Tuesday
Sunny
65°/ 45° 18°/ 7°
0%
Wednesday
Cloudy
62°/ 45° 17°/ 7°
30%
Thursday
Rain Showers
62°17°
20%

Night: Clear. Widespread frost after midnight. Lows around 30. West winds around 10 mph, becoming south after midnight.

Names listed above may include county names.

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