June
June · September · August
77climate match
United States · 1991–2020
Best time to visit
Chinook.
June leads for comfortable weather in Chinook: typically 24.6°C by day, 9.4°C at night, with 73 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortJune
Typical high24.6°C
Typical low9.4°C
Rain in June73 mm
August
August · July · June
70climate match
May
May · September · June
82climate match
The weakest month is January, scoring 5 against June’s 77 — days reach only -2°C, 26° below the 24°C the score treats as ideal, and nights drop to -15.3°C.
Month by month
The whole year,
without the guesswork.
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
Jan
5-2° / -15.3°
Feb
50.3° / -13.8°
Mar
56.7° / -7.8°
Apr
3714.4° / -1.6°
May
6120° / 4.2°
Jun
7724.6° / 9.4°
Jul
7229.6° / 11.9°
Aug
7529° / 10.7°
Sep
7722.9° / 5.1°
Oct
3714.3° / -1.8°
Nov
55.7° / -8.2°
Dec
5-0.3° / -13.6°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | -2°C | -15.3°C | 11 mm | 2.4 | 8 h 42 | 5 | Strong coverage |
| February | 0.3°C | -13.8°C | 10 mm | 2.4 | 10 h 06 | 5 | Strong coverage |
| March | 6.7°C | -7.8°C | 14 mm | 2.8 | 11 h 44 | 5 | Strong coverage |
| April | 14.4°C | -1.6°C | 25 mm | 4.2 | 13 h 36 | 37 | Strong coverage |
| May | 20°C | 4.2°C | 52 mm | 7.2 | 15 h 12 | 61 | Strong coverage |
| June | 24.6°C | 9.4°C | 73 mm | 9.2 | 16 h 06 | 77 | Strong coverage |
| July | 29.6°C | 11.9°C | 46 mm | 5.6 | 15 h 45 | 72 | Strong coverage |
| August | 29°C | 10.7°C | 31 mm | 4 | 14 h 21 | 75 | Strong coverage |
| September | 22.9°C | 5.1°C | 31 mm | 4.9 | 12 h 31 | 77 | Strong coverage |
| October | 14.3°C | -1.8°C | 22 mm | 3.8 | 10 h 43 | 37 | Strong coverage |
| November | 5.7°C | -8.2°C | 16 mm | 3.2 | 9 h 07 | 5 | Strong coverage |
| December | -0.3°C | -13.6°C | 9 mm | 2 | 8 h 18 | 5 | Strong coverage |
What has changed
Chinook runs -0.8°C
on the 1961–1990 baseline.
Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.
Jan
+0.9
Feb
-3.1
Mar
-1.6
Apr
-2.2
May
-1.5
Jun
-1.2
Jul
+0.2
Aug
-0.3
Sep
+1.3
Oct
-2.3
Nov
-0.6
Dec
+0.7
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 20.6°C5 Jan 1984 | -45.6°C20 Jan 1954 | 31 mm11 Jan 2013 | 50 mm1971 · driest 0 mm in 1969 | 126 |
| February | 23.9°C24 Feb 1995 | -46.1°C14 Feb 1936 | 13 mm24 Feb 2006 | 31 mm1994 · driest 0 mm in 1964 | 128 |
| March | 27.8°C31 Mar 2004 | -38.9°C5 Mar 1947 | 28 mm20 Mar 2012 | 49 mm1921 · driest 0 mm in 1926 | 129 |
| April | 34.4°C29 Apr 1939 | -25.0°C1 Apr 1908 | 54 mm4 Apr 1955 | 103 mm2016 · driest 0 mm in 1949 | 127 |
| May | 36.7°C16 May 1901 | -11.7°C2 May 1954 | 60 mm17 May 1949 | 182 mm1927 · driest 3 mm in 2011 | 127 |
| June | 42.8°C21 Jun 1900 | -2.2°C1 Jun 1979 | 90 mm22 Jun 1938 | 176 mm1942 · driest 0 mm in 1985 | 130 |
| July | 43.3°C27 Jul 1917 | 0.0°C30 Jul 1986 | 80 mm10 Jul 1983 | 148 mm2004 · driest 0 mm in 1906 | 126 |
| August | 42.8°C5 Aug 1961 | -1.1°C31 Aug 1988 | 84 mm21 Aug 1933 | 140 mm2014 · driest 0 mm in 1969 | 125 |
| September | 40.0°C4 Sep 1998 | -10.6°C21 Sep 1995 | 140 mm24 Sep 1986 | 224 mm1986 · driest 0 mm in 1907 | 125 |
| October | 32.2°C1 Oct 1992 | -31.1°C29 Oct 1991 | 33 mm4 Oct 2016 | 107 mm2016 · driest 0 mm in 1915 | 119 |
| November | 27.8°C5 Nov 1921 | -38.9°C23 Nov 1985 | 27 mm13 Nov 1932 | 57 mm1958 · driest 0 mm in 1969 | 123 |
| December | 21.1°C5 Dec 1905 | -47.2°C21 Dec 1989 | 24 mm16 Dec 1977 | 54 mm1977 · driest 0 mm in 1913 | 125 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 29 | <1 | 4 |
| February | 0 | 0 | 28 | <1 | 4 |
| March | <1 | 0 | 29 | <1 | 3 |
| April | 2 | <1 | 20 | <1 | <1 |
| May | 7 | 1 | 6 | 2 | <1 |
| June | 15 | 4 | <1 | 2 | 0 |
| July | 26 | 15 | 0 | 1 | 0 |
| August | 24 | 15 | 0 | <1 | 0 |
| September | 12 | 4 | 3 | 1 | <1 |
| October | 2 | <1 | 20 | <1 | <1 |
| November | 0 | 0 | 27 | <1 | 3 |
| December | 0 | 0 | 30 | <1 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 10% | <1% | 6% | -8.9–3.7°C |
| February | <1% | 9% | <1% | 6% | -6.8–6.3°C |
| March | 3% | 10% | <1% | 5% | -0.1–11.7°C |
| April | 23% | 14% | 2% | 10% | 10.7–18.6°C |
| May | 50% | 23% | 5% | 24% | 17.9–24.0°C |
| June | 66% | 28% | 7% | 31% | 22.4–28.0°C |
| July | 82% | 17% | 4% | 12% | 28.0–32.6°C |
| August | 83% | 15% | 3% | 12% | 26.3–31.9°C |
| September | 64% | 15% | 3% | 13% | 19.1–26.5°C |
| October | 30% | 10% | 1% | 5% | 11.4–19.1°C |
| November | 2% | 10% | <1% | 6% | 0.9–10.5°C |
| December | <1% | 10% | <1% | 5% | -6.1–4.8°C |
A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.
The evidence behind this page
Nearby, measured,
and named.
- Place identity
- GeoNames 5644801
- NOAA station
- USC00241722 · CHINOOK
- Station distance
- 0.4 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 29 usable years
- Daylight
- Calculated from latitude 48.59°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.