Fairfield, MT Weather Forecast
Local 7-day forecast
Mostly Clear
Track current conditions, temperature changes, wind, and the full daily outlook for Fairfield, MT in one place.
Mostly clear, with a low around 43. West northwest wind around 2 mph.
Local Weather Overview
This forecast page for Fairfield, 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: Sep 17, 2026 3:37 AM MDT.
The active forecast window currently covers Sep 17 to Sep 23, 2026 for Fairfield, MT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 17 to Sep 23, 2026
- Latest sync
- Sep 17, 2026 3:37 AM MDT
- Forecast office
- TFX
- Source
- NOAA / NWS
Daily Outlook
This Week in Fairfield
Monday looks like the warmest upcoming period in Fairfield at 78 degrees F.
Overnight is the coolest period ahead with temperatures near 43 degrees F.
The strongest winds are forecast for Friday at about 3 to 9 mph NNW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 17, 2026 3:37 AM MDT
- Coverage
- 7 days
- Time zone
- America/Denver
- Forecast office
- TFX
- Radar station
- KTFX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly sunny, with a high near 73. South southeast wind 3 to 8 mph.
A chance of rain showers before 2am. Partly cloudy, with a low around 49. North northwest wind 2 to 8 mph. Chance of precipitation is 30%.
A slight chance of rain showers after 5pm. Partly sunny, with a high near 72. North northwest wind 3 to 9 mph. Chance of precipitation is 20%.
A chance of showers and thunderstorms before midnight, then a chance of rain. Cloudy, with a low around 50. North northwest wind 6 to 9 mph. Chance of precipitation is 50%.
A chance of rain before noon. Partly sunny, with a high near 68. North wind around 6 mph. Chance of precipitation is 30%.
Partly cloudy, with a low around 47. South wind around 6 mph.
Sunny, with a high near 74. South southwest wind around 6 mph.
Mostly clear, with a low around 48.
Sunny, with a high near 78.
Mostly clear, with a low around 49.
Sunny, with a high near 77.
Partly cloudy, with a low around 48.
Mostly sunny, with a high near 76.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Sep 17
|
Mostly Clear
|
43°F |
2 mph
WNW
|
|
Thursday
Sep 17
|
Mostly Sunny
|
73°F |
3 to 8 mph
SSE
|
|
Thursday Night
Sep 17
|
Chance Rain Showers
|
49°F |
2 to 8 mph
NNW
|
|
Friday
Sep 18
|
Partly Sunny then Slight Chance Rain Showers
|
72°F |
3 to 9 mph
NNW
|
|
Friday Night
Sep 18
|
Chance Showers And Thunderstorms then Chance Light Rain
|
50°F |
6 to 9 mph
NNW
|
|
Saturday
Sep 19
|
Chance Light Rain then Partly Sunny
|
68°F |
6 mph
N
|
|
Saturday Night
Sep 19
|
Partly Cloudy
|
47°F |
6 mph
S
|
|
Sunday
Sep 20
|
Sunny
|
74°F |
6 mph
SSW
|
|
Sunday Night
Sep 20
|
Mostly Clear
|
48°F |
2 to 6 mph
S
|
|
Monday
Sep 21
|
Sunny
|
78°F |
7 mph
SW
|
|
Monday Night
Sep 21
|
Mostly Clear
|
49°F |
6 mph
SW
|
|
Tuesday
Sep 22
|
Sunny
|
77°F |
6 mph
SW
|
|
Tuesday Night
Sep 22
|
Partly Cloudy
|
48°F |
6 mph
WSW
|
|
Wednesday
Sep 23
|
Mostly Sunny
|
76°F |
5 to 9 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Fairfield.