September
September · June · July
76climate match
United States · 1991–2020
Best time to visit
Chewelah.
September leads for comfortable weather in Chewelah: typically 25.2°C by day, 4.3°C at night, with 22 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high25.2°C
Typical low4.3°C
Rain in September22 mm
July
July · August · September
62climate match
May
May · September · June
75climate match
The weakest month is January, scoring 5 against September’s 76 — days reach only 1.2°C, 23° below the 24°C the score treats as ideal.
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
51.2° / -6.5°
Feb
55.1° / -5.7°
Mar
1410.8° / -2.5°
Apr
4116.4° / 0.7°
May
6621.8° / 4.9°
Jun
7324.9° / 7.8°
Jul
6830.7° / 9.7°
Aug
6630.8° / 8.5°
Sep
7625.2° / 4.3°
Oct
4015.7° / -0.4°
Nov
56.2° / -3°
Dec
51.1° / -6.1°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 1.2°C | -6.5°C | 78 mm | 11.1 | 8 h 44 | 5 | Strong coverage |
| February | 5.1°C | -5.7°C | 46 mm | 7.7 | 10 h 07 | 5 | Strong coverage |
| March | 10.8°C | -2.5°C | 71 mm | 9.7 | 11 h 44 | 14 | Strong coverage |
| April | 16.4°C | 0.7°C | 52 mm | 8.8 | 13 h 35 | 41 | Strong coverage |
| May | 21.8°C | 4.9°C | 56 mm | 9.3 | 15 h 10 | 66 | Strong coverage |
| June | 24.9°C | 7.8°C | 67 mm | 10.3 | 16 h 04 | 73 | Good coverage |
| July | 30.7°C | 9.7°C | 25 mm | 3.7 | 15 h 42 | 68 | Strong coverage |
| August | 30.8°C | 8.5°C | 18 mm | 3 | 14 h 19 | 66 | Strong coverage |
| September | 25.2°C | 4.3°C | 22 mm | 3.9 | 12 h 31 | 76 | Strong coverage |
| October | 15.7°C | -0.4°C | 48 mm | 6.8 | 10 h 44 | 40 | Good coverage |
| November | 6.2°C | -3°C | 76 mm | 11.1 | 9 h 09 | 5 | Strong coverage |
| December | 1.1°C | -6.1°C | 99 mm | 11.1 | 8 h 21 | 5 | Strong coverage |
What has changed
Chewelah runs +0.4°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
0.0
Feb
-1.3
Mar
+0.3
Apr
+0.4
May
+1.1
Jun
-0.2
Jul
+1.6
Aug
+1.4
Sep
+1.0
Oct
-0.1
Nov
0.0
Dec
+0.1
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 13.9°C13 Jan 1945 | -38.9°C30 Jan 1950 | 70 mm22 Jan 1990 | 163 mm1990 · driest 0 mm in 2025 | 99 |
| February | 16.7°C26 Feb 1991 | -38.9°C9 Feb 1933 | 38 mm14 Feb 1990 | 125 mm1999 · driest 0 mm in 2005 | 98 |
| March | 25.0°C31 Mar 1992 | -29.4°C4 Mar 2019 | 61 mm6 Mar 1939 | 129 mm2012 · driest 5 mm in 1936 | 98 |
| April | 32.8°C28 Apr 1987 | -11.1°C20 Apr 1927 | 33 mm8 Apr 1983 | 97 mm1955 · driest 3 mm in 1938 | 99 |
| May | 37.2°C29 May 1986 | -8.9°C1 May 1954 | 60 mm26 May 1998 | 163 mm1990 · driest 2 mm in 1937 | 98 |
| June | 43.3°C30 Jun 2021 | -3.3°C13 Jun 1952 | 41 mm12 Jun 1992 | 138 mm2012 · driest 8 mm in 1974 | 96 |
| July | 41.7°C27 Jul 1939 | -0.6°C2 Jul 1962 | 43 mm1 Jul 1955 | 120 mm1993 · driest 0 mm in 2021 | 99 |
| August | 43.3°C5 Aug 1961 | -2.2°C14 Aug 1937 | 48 mm17 Aug 2004 | 96 mm1976 · driest 0 mm in 1986 | 99 |
| September | 40.0°C2 Sep 1988 | -11.1°C24 Sep 1926 | 48 mm10 Sep 1927 | 159 mm1927 · driest 0 mm in 2012 | 97 |
| October | 33.3°C2 Oct 1992 | -17.2°C26 Oct 2020 | 46 mm14 Oct 2016 | 172 mm2016 · driest 0 mm in 1978 | 99 |
| November | 20.6°C27 Nov 1949 | -28.3°C24 Nov 1985 | 51 mm28 Nov 2005 | 211 mm1973 · driest 1 mm in 1929 | 99 |
| December | 15.6°C2 Dec 2021 | -36.1°C31 Dec 1927 | 64 mm10 Dec 1992 | 167 mm1933 · driest 13 mm in 1985 | 100 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 27 | 2 | 5 |
| February | 0 | 0 | 24 | 1 | 3 |
| March | 0 | 0 | 23 | 2 | 2 |
| April | 2 | <1 | 14 | <1 | <1 |
| May | 9 | 2 | 4 | 1 | 0 |
| June | 15 | 5 | <1 | 2 | 0 |
| July | 27 | 18 | 0 | <1 | 0 |
| August | 27 | 19 | <1 | <1 | 0 |
| September | 16 | 6 | 4 | <1 | 0 |
| October | 2 | <1 | 17 | 1 | 0 |
| November | 0 | 0 | 21 | 2 | 2 |
| December | 0 | 0 | 27 | 3 | 6 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 32% | 6% | 39% | -2.5–3.6°C |
| February | 0% | 28% | 5% | 32% | 1.5–7.7°C |
| March | 3% | 28% | 4% | 30% | 7.3–13.2°C |
| April | 22% | 23% | 3% | 23% | 13.6–18.8°C |
| May | 50% | 25% | 4% | 27% | 18.1–24.0°C |
| June | 67% | 27% | 4% | 30% | 22.4–27.6°C |
| July | 88% | 11% | 2% | 7% | 27.7–32.7°C |
| August | 89% | 11% | 2% | 10% | 27.4–32.6°C |
| September | 72% | 15% | 3% | 13% | 20.8–27.9°C |
| October | 23% | 23% | 4% | 27% | 13.9–18.7°C |
| November | 0% | 35% | 7% | 42% | 4.1–8.4°C |
| December | 0% | 35% | 8% | 45% | -1.8–3.4°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 5789920
- NOAA station
- USC00451395 · CHEWELAH
- Station distance
- 1.9 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 20 usable years
- Daylight
- Calculated from latitude 48.28°, 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.