Cold steppe climate
Climate Big Sandy - Montana
Annual high58ºF
Annual low32ºF
Precipitation13.41 inch
| Month | HighºF | LowºF | Precipinch |
|---|---|---|---|
| Jan | 32 | 10 | 0.48 |
| Feb | 36 | 14 | 0.29 |
| Mar | 47 | 23 | 0.62 |
| Apr | 59 | 33 | 1.12 |
| May | 68 | 42 | 2.37 |
| Jun | 76 | 49 | 2.70 |
| Jul | 85 | 55 | 1.52 |
| Aug | 85 | 53 | 1.14 |
| Sep | 73 | 44 | 1.35 |
| Oct | 59 | 33 | 0.81 |
| Nov | 43 | 21 | 0.51 |
| Dec | 33 | 11 | 0.50 |
- JanHigh 32ºFLow 10ºFPrecip 0.48 inch
- FebHigh 36ºFLow 14ºFPrecip 0.29 inch
- MarHigh 47ºFLow 23ºFPrecip 0.62 inch
- AprHigh 59ºFLow 33ºFPrecip 1.12 inch
- MayHigh 68ºFLow 42ºFPrecip 2.37 inch
- JunHigh 76ºFLow 49ºFPrecip 2.70 inch
- JulHigh 85ºFLow 55ºFPrecip 1.52 inch
- AugHigh 85ºFLow 53ºFPrecip 1.14 inch
- SepHigh 73ºFLow 44ºFPrecip 1.35 inch
- OctHigh 59ºFLow 33ºFPrecip 0.81 inch
- NovHigh 43ºFLow 21ºFPrecip 0.51 inch
- DecHigh 33ºFLow 11ºFPrecip 0.50 inch
Climate summary
What is the average weather in Big Sandy, Montana?
Big Sandy experiences a cold semi-arid climate, marked by very large seasonal temperature contrasts due to its inland location. Summers are warm, while winters are cold. The area is dry overall, with precipitation generally low and arriving in brief showers, though summer months tend to be wetter than the drier winters.
Big Sandy weather averages
Annual high58ºF
Annual low32ºF
Precipitation13.41 inch
Daily normals Big Sandy - Montana - January
| Day | HighºF | LowºF | Prec/ | Prec/ |
|---|---|---|---|---|
| Jan 1 | 30.4 | 9.5 | 0.01 | 0.01 |
| Jan 2 | 30.3 | 9.4 | 0.03 | 0.03 |
| Jan 3 | 30.2 | 9.3 | 0.04 | 0.04 |
| Jan 4 | 30.2 | 9.2 | 0.05 | 0.05 |
| Jan 5 | 30.2 | 9.2 | 0.07 | 0.07 |
| Jan 6 | 30.1 | 9.1 | 0.09 | 0.09 |
| Jan 7 | 30.1 | 9.1 | 0.10 | 0.10 |
| Jan 8 | 30.1 | 9.1 | 0.12 | 0.12 |
| Jan 9 | 30.2 | 9.1 | 0.13 | 0.13 |
| Jan 10 | 30.2 | 9.1 | 0.15 | 0.15 |
| Jan 11 | 30.2 | 9.2 | 0.17 | 0.17 |
| Jan 12 | 30.3 | 9.2 | 0.18 | 0.18 |
| Jan 13 | 30.3 | 9.3 | 0.19 | 0.19 |
| Jan 14 | 30.4 | 9.3 | 0.21 | 0.21 |
| Jan 15 | 30.4 | 9.4 | 0.22 | 0.22 |
| Jan 16 | 30.5 | 9.5 | 0.24 | 0.24 |
| Jan 17 | 30.6 | 9.6 | 0.25 | 0.25 |
| Jan 18 | 30.7 | 9.7 | 0.26 | 0.26 |
| Jan 19 | 30.8 | 9.8 | 0.28 | 0.28 |
| Jan 20 | 30.9 | 9.9 | 0.29 | 0.29 |
| Jan 21 | 31.0 | 10.0 | 0.30 | 0.30 |
| Jan 22 | 31.1 | 10.1 | 0.32 | 0.32 |
| Jan 23 | 31.2 | 10.2 | 0.33 | 0.33 |
| Jan 24 | 31.3 | 10.4 | 0.34 | 0.34 |
| Jan 25 | 31.5 | 10.5 | 0.36 | 0.36 |
| Jan 26 | 31.6 | 10.6 | 0.37 | 0.37 |
| Jan 27 | 31.7 | 10.7 | 0.39 | 0.39 |
| Jan 28 | 31.9 | 10.9 | 0.40 | 0.40 |
| Jan 29 | 32.0 | 11.0 | 0.42 | 0.42 |
| Jan 30 | 32.1 | 11.1 | 0.43 | 0.43 |
| Jan 31 | 32.3 | 11.3 | 0.45 | 0.45 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Big Sandy - September 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Sep 1 | 87.1 | 57.9 | 0.00 |
| Sep 2 | 87.1 | 60.1 | 0.00 |
| Sep 3 | 82.0 | 52.0 | 0.00 |
| Sep 4 | 80.1 | 55.0 | 0.00 |
| Sep 5 | 79.0 | 44.1 | 0.75 |
| Sep 6 | 77.0 | 52.0 | 0.00 |
| Sep 7 | 69.1 | 52.0 | 0.00 |
| Sep 8 | 60.1 | 52.0 | 0.00 |
| Sep 9 | 75.9 | 46.0 | 0.00 |
| Sep 10 | 86.0 | 54.0 | 0.00 |
| Sep 11 | 73.9 | 46.9 | 0.45 |
| Sep 12 | 63.0 | 39.0 | 0.00 |
| Sep 13 | 72.0 | 39.9 | 0.00 |
| Sep 14 | 70.0 | 46.9 | 0.49 |
| Sep 15 | 66.0 | 48.0 | 0.00 |
| Sep 16 | 66.0 | 39.9 | 0.00 |
| Sep 17 | 73.9 | 50.0 | 0.00 |
| Sep 18 | 75.0 | 45.0 | 0.00 |
| Sep 19 | 71.1 | 50.0 | 0.00 |
| Sep 20 | 73.9 | 42.1 | 0.00 |
| Sep 21 | 75.0 | 52.0 | 0.00 |
| Sep 22 | 81.0 | 45.0 | 0.00 |
| Sep 23 | 81.0 | 52.0 | 0.00 |
| Sep 24 | 86.0 | 42.1 | 0.00 |
| Sep 25 | 90.0 | 64.9 | 0.00 |
| Sep 26 | 82.0 | 44.1 | 0.00 |
| Sep 27 | 62.1 | 30.0 | 0.02 |
| Sep 28 | 72.0 | 36.0 | 0.00 |
| Sep 29 | – | – | – |
| Sep 30 | – | – | – |
The data for September 2026 is incomplete: some days or values are missing.
- –No data
- –Not yet observed or received
- TTrace, too small to measure
Observed extremes
- Highest max temperature90.0ºF · Sep 25
- Lowest max temperature60.1ºF · Sep 8
- Highest min temperature64.9ºF · Sep 25
- Lowest min temperature30.0ºF · Sep 27
Geo Big Sandy - Montana
Location
- Country
- United States
- State
- Montana
- County
- Chouteau
- City
- Big Sandy
- Zip Code
- 59520
- Elevation
- 2690 ft
- Longitude
- -110.11
- Latitude
- 48.16
- ICAO
- –
- IATA
- –