Cold steppe climate
Climate Chinook - Montana
Annual high57ºF
Annual low29ºF
Precipitation13.12 inch
| Month | HighºF | LowºF | Precipinch | Snowinch |
|---|---|---|---|---|
| Jan | 29 | 4 | 0.49 | 6 |
| Feb | 34 | 8 | 0.40 | 6 |
| Mar | 45 | 19 | 0.61 | 4 |
| Apr | 59 | 31 | 0.91 | 1 |
| May | 68 | 41 | 2.25 | 1 |
| Jun | 77 | 50 | 2.35 | 0 |
| Jul | 85 | 54 | 1.74 | 0 |
| Aug | 84 | 52 | 1.22 | 0 |
| Sep | 72 | 40 | 1.41 | 0 |
| Oct | 59 | 28 | 0.71 | 1 |
| Nov | 42 | 16 | 0.55 | 6 |
| Dec | 30 | 6 | 0.48 | 6 |
- JanHigh 29ºFLow 4ºFPrecip 0.49 inch
- FebHigh 34ºFLow 8ºFPrecip 0.40 inch
- MarHigh 45ºFLow 19ºFPrecip 0.61 inch
- AprHigh 59ºFLow 31ºFPrecip 0.91 inch
- MayHigh 68ºFLow 41ºFPrecip 2.25 inch
- JunHigh 77ºFLow 50ºFPrecip 2.35 inch
- JulHigh 85ºFLow 54ºFPrecip 1.74 inch
- AugHigh 84ºFLow 52ºFPrecip 1.22 inch
- SepHigh 72ºFLow 40ºFPrecip 1.41 inch
- OctHigh 59ºFLow 28ºFPrecip 0.71 inch
- NovHigh 42ºFLow 16ºFPrecip 0.55 inch
- DecHigh 30ºFLow 6ºFPrecip 0.48 inch
Climate summary
What is the average weather in Chinook, Montana?
Chinook experiences a cold semi-arid climate, marked by very large seasonal temperature contrasts. Summers are warm, but winters are very cold and bring significant snowfall. Precipitation is generally low year-round, with a strong pattern of wetter summers and drier winters, often arriving in brief showers.
Chinook weather averages
Annual high57ºF
Annual low29ºF
Precipitation13.12 inch
Snowfall31 inch
Daily normals Chinook - Montana - January
| Day | HighºF | LowºF | Prec/ | Prec/ |
|---|---|---|---|---|
| Jan 1 | 26.8 | 4.0 | 0.02 | 0.02 |
| Jan 2 | 26.7 | 3.9 | 0.03 | 0.03 |
| Jan 3 | 26.7 | 3.9 | 0.05 | 0.05 |
| Jan 4 | 26.6 | 3.8 | 0.07 | 0.07 |
| Jan 5 | 26.6 | 3.8 | 0.09 | 0.09 |
| Jan 6 | 26.5 | 3.8 | 0.10 | 0.10 |
| Jan 7 | 26.5 | 3.7 | 0.12 | 0.12 |
| Jan 8 | 26.5 | 3.7 | 0.14 | 0.14 |
| Jan 9 | 26.5 | 3.8 | 0.16 | 0.16 |
| Jan 10 | 26.5 | 3.8 | 0.18 | 0.18 |
| Jan 11 | 26.5 | 3.8 | 0.20 | 0.20 |
| Jan 12 | 26.6 | 3.8 | 0.22 | 0.22 |
| Jan 13 | 26.6 | 3.9 | 0.23 | 0.23 |
| Jan 14 | 26.7 | 3.9 | 0.25 | 0.25 |
| Jan 15 | 26.7 | 4.0 | 0.26 | 0.26 |
| Jan 16 | 26.8 | 4.0 | 0.28 | 0.28 |
| Jan 17 | 26.9 | 4.1 | 0.29 | 0.29 |
| Jan 18 | 27.0 | 4.2 | 0.30 | 0.30 |
| Jan 19 | 27.0 | 4.2 | 0.32 | 0.32 |
| Jan 20 | 27.1 | 4.3 | 0.33 | 0.33 |
| Jan 21 | 27.2 | 4.4 | 0.34 | 0.34 |
| Jan 22 | 27.4 | 4.4 | 0.35 | 0.35 |
| Jan 23 | 27.5 | 4.5 | 0.36 | 0.36 |
| Jan 24 | 27.6 | 4.6 | 0.37 | 0.37 |
| Jan 25 | 27.7 | 4.6 | 0.38 | 0.38 |
| Jan 26 | 27.8 | 4.7 | 0.39 | 0.39 |
| Jan 27 | 28.0 | 4.8 | 0.41 | 0.41 |
| Jan 28 | 28.1 | 4.9 | 0.42 | 0.42 |
| Jan 29 | 28.2 | 4.9 | 0.43 | 0.43 |
| Jan 30 | 28.4 | 5.0 | 0.44 | 0.44 |
| Jan 31 | 28.5 | 5.1 | 0.45 | 0.45 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Chinook - October 2026
| Day | HighºF | LowºF | Precip.inch | Snowinch | Snow depthinch |
|---|---|---|---|---|---|
| Oct 1 | 63.0 | 39.9 | 0.00 | 0.00 | 0.0 |
| Oct 2 | 66.0 | 41.0 | 0.00 | 0.00 | 0.0 |
| Oct 3 | 77.0 | 41.0 | 0.06 | 0.00 | 0.0 |
| Oct 4 | 66.9 | 37.9 | 0.00 | 0.00 | 0.0 |
| Oct 5 | – | – | – | – | – |
| Oct 6 | – | – | – | – | – |
| Oct 7 | – | – | – | – | – |
| Oct 8 | 71.1 | 36.0 | 0.00 | 0.00 | 0.0 |
| Oct 9 | 72.0 | 37.0 | 0.00 | 0.00 | 0.0 |
| Oct 10 | 84.0 | 42.1 | 0.00 | 0.00 | 0.0 |
| Oct 11 | 48.9 | 36.0 | 0.28 | 0.00 | 0.0 |
| Oct 12 | 37.0 | 32.0 | 0.95 | 2.01 | 2.0 |
| Oct 13 | 39.0 | 27.0 | 0.00 | 0.00 | 0.0 |
| Oct 14 | 53.1 | 26.1 | 0.00 | 0.00 | 0.0 |
| Oct 15 | 60.1 | 26.1 | 0.00 | 0.00 | 0.0 |
| Oct 16 | 51.1 | 28.9 | 0.00 | 0.00 | 0.0 |
| Oct 17 | – | – | – | – | – |
| Oct 18 | – | – | – | – | – |
| Oct 19 | 61.0 | 32.0 | 0.00 | 0.00 | 0.0 |
| Oct 20 | – | – | – | – | – |
| Oct 21 | – | – | – | – | – |
| Oct 22 | 66.9 | 30.9 | 0.00 | 0.00 | 0.0 |
| Oct 23 | 72.0 | 34.0 | 0.00 | 0.00 | 0.0 |
| Oct 24 | 50.0 | 28.9 | 0.65 | 0.98 | 1.0 |
| Oct 25 | 44.1 | 27.0 | 0.00 | 0.00 | 0.0 |
| Oct 26 | 44.1 | 25.0 | 0.00 | 0.00 | 0.0 |
| Oct 27 | 46.0 | 27.0 | 0.02 | 0.00 | 0.0 |
| Oct 28 | 48.0 | 35.1 | 0.35 | 0.00 | 0.0 |
| Oct 29 | 39.9 | 33.1 | 0.00 | 0.00 | 0.0 |
| Oct 30 | 39.0 | 33.1 | 0.00 | 0.00 | 0.0 |
| Oct 31 | 36.0 | 33.1 | 0.06 | 0.00 | 0.0 |
The data for October 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 temperature84.0ºF · Oct 10
- Lowest max temperature36.0ºF · Oct 31
- Highest min temperature42.1ºF · Oct 10
- Lowest min temperature25.0ºF · Oct 26
Geo Chinook - Montana
Location
- Country
- United States
- State
- Montana
- County
- Blaine
- City
- Chinook
- Zip Code
- 59523
- Elevation
- 2408 ft
- Longitude
- -109.25
- Latitude
- 48.59
- ICAO
- –
- IATA
- –