Sidney, MT Weather Forecast
Local 7-day forecast
Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Sidney, MT in one place.
Showers and thunderstorms. Mostly cloudy, with a high near 79. East southeast wind around 16 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
Local Weather Overview
This forecast page for Sidney, MT is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: May 30, 2026 3:59 PM MDT.
The active forecast window currently covers May 30 to Jun 5, 2026 for Sidney, MT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 30 to Jun 5, 2026
- Latest sync
- May 30, 2026 3:59 PM MDT
- Forecast office
- GGW
- Source
- NOAA / NWS
Daily Outlook
This Week in Sidney
This Afternoon looks like the warmest upcoming period in Sidney at 79 degrees F.
Monday Night is the coolest period ahead with temperatures near 44 degrees F.
The strongest winds are forecast for This Afternoon at about 16 mph ESE.
Precipitation is mentioned in 13 upcoming forecast periods.
Forecast Details
- Last updated
- May 30, 2026 3:59 PM MDT
- Coverage
- 8 days
- Time zone
- America/Denver
- Forecast office
- GGW
- Radar station
- KGGW
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Mostly cloudy. Low around 53, with temperatures rising to around 58 overnight. East southeast wind 7 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.
A chance of rain showers before noon, then a chance of showers and thunderstorms between noon and 1pm, then showers and thunderstorms. Mostly cloudy. High near 78, with temperatures falling to around 72 in the afternoon. Southeast wind 7 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Showers and thunderstorms. Cloudy, with a low around 45. West southwest wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.
A slight chance of rain showers before noon. Mostly sunny, with a high near 70. West wind around 16 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
A chance of rain showers after midnight. Partly cloudy, with a low around 44. West northwest wind 3 to 12 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Rain showers likely before noon, then showers and thunderstorms likely. Mostly cloudy, with a high near 76. Southeast wind 5 to 12 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 46. North northeast wind 5 to 8 mph. Chance of precipitation is 40%.
A slight chance of rain showers before noon, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 76. Northwest wind 3 to 12 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
A slight chance of rain showers after midnight. Partly cloudy, with a low around 46. North northwest wind 5 to 12 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
A chance of rain showers. Partly sunny, with a high near 75. North northeast wind 5 to 10 mph, with gusts as high as 18 mph.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 46.
A chance of rain showers. Partly sunny, with a high near 78.
Partly cloudy, with a low around 48.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
May 30
|
Showers And Thunderstorms
|
79°F |
16 mph
ESE
|
|
Tonight
May 30
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
53°F |
7 to 15 mph
ESE
|
|
Sunday
May 31
|
Chance Rain Showers then Chance Showers And Thunderstorms
|
78°F |
7 to 13 mph
SE
|
|
Sunday Night
May 31
|
Showers And Thunderstorms
|
45°F |
14 mph
WSW
|
|
Monday
Jun 1
|
Slight Chance Rain Showers then Mostly Sunny
|
70°F |
16 mph
W
|
|
Monday Night
Jun 1
|
Partly Cloudy then Chance Rain Showers
|
44°F |
3 to 12 mph
WNW
|
|
Tuesday
Jun 2
|
Rain Showers Likely
|
76°F |
5 to 12 mph
SE
|
|
Tuesday Night
Jun 2
|
Chance Showers And Thunderstorms
|
46°F |
5 to 8 mph
NNE
|
|
Wednesday
Jun 3
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
76°F |
3 to 12 mph
NW
|
|
Wednesday Night
Jun 3
|
Partly Cloudy then Slight Chance Rain Showers
|
46°F |
5 to 12 mph
NNW
|
|
Thursday
Jun 4
|
Chance Rain Showers
|
75°F |
5 to 10 mph
NNE
|
|
Thursday Night
Jun 4
|
Chance Showers And Thunderstorms
|
46°F |
5 to 10 mph
E
|
|
Friday
Jun 5
|
Chance Rain Showers
|
78°F |
6 to 10 mph
W
|
|
Friday Night
Jun 5
|
Partly Cloudy
|
48°F |
3 to 8 mph
SSE
|
Nearby Forecasts
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