September
September · May · August
77climate match
United States · 1991–2020
Best time to visit
Chetco.
September leads for comfortable weather in Chetco: typically 28°C by day, 9.5°C at night, with 22 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high28°C
Typical low9.5°C
Rain in September22 mm
August
August · July · September
72climate match
April
April · October · September
83climate match
The weakest month is January, scoring 12 against September’s 77 — days reach only 9.1°C, 15° below the 24°C the score treats as ideal, and nights drop to -6.6°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
129.1° / -6.6°
Feb
2411.9° / -4.9°
Mar
4316.3° / -2.7°
Apr
6020.1° / 0.1°
May
7625.4° / 4.2°
Jun
6531.2° / 8.6°
Jul
6832.8° / 14.1°
Aug
7331.5° / 13.9°
Sep
7728° / 9.5°
Oct
7222.1° / 2.9°
Nov
3814.9° / -3°
Dec
139.6° / -6.7°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 9.1°C | -6.6°C | 16 mm | 2 | 10 h 01 | 12 | Strong coverage |
| February | 11.9°C | -4.9°C | 10 mm | 1.4 | 10 h 51 | 24 | Strong coverage |
| March | 16.3°C | -2.7°C | 16 mm | 2.2 | 11 h 52 | 43 | Strong coverage |
| April | 20.1°C | 0.1°C | 10 mm | 1.1 | 13 h 02 | 60 | Good coverage |
| May | 25.4°C | 4.2°C | 9 mm | 1.4 | 14 h | 76 | Strong coverage |
| June | 31.2°C | 8.6°C | 3 mm | 0.5 | 14 h 31 | 65 | Strong coverage |
| July | 32.8°C | 14.1°C | 29 mm | 4 | 14 h 19 | 68 | Strong coverage |
| August | 31.5°C | 13.9°C | 29 mm | 3.6 | 13 h 29 | 73 | Strong coverage |
| September | 28°C | 9.5°C | 22 mm | 2.6 | 12 h 21 | 77 | Strong coverage |
| October | 22.1°C | 2.9°C | 17 mm | 1.9 | 11 h 14 | 72 | Strong coverage |
| November | 14.9°C | -3°C | 16 mm | 1.4 | 10 h 16 | 38 | Strong coverage |
| December | 9.6°C | -6.7°C | 17 mm | 1.5 | 9 h 48 | 13 | Good coverage |
What has changed
Chetco runs +0.9°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
+1.1
Feb
+0.8
Mar
+1.2
Apr
+0.9
May
+0.4
Jun
+1.1
Jul
-0.1
Aug
+0.3
Sep
+1.0
Oct
+1.2
Nov
+1.1
Dec
+1.5
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 22.2°C30 Jan 1952 | -30.6°C30 Jan 1979 | 39 mm8 Jan 1993 | 122 mm1993 · driest 0 mm in 2011 | 68 |
| February | 23.3°C25 Feb 1986 | -30.0°C1 Feb 1951 | 64 mm3 Feb 1985 | 88 mm1985 · driest 0 mm in 2014 | 67 |
| March | 30.6°C21 Mar 2026 | -26.1°C4 Mar 1966 | 50 mm10 Mar 2020 | 73 mm2020 · driest 0 mm in 2014 | 66 |
| April | 30.0°C27 Apr 2000 | -15.0°C3 Apr 1956 | 38 mm13 Apr 2020 | 57 mm1952 · driest 0 mm in 2000 | 63 |
| May | 35.6°C29 May 2000 | -10.0°C5 May 1975 | 34 mm31 May 1981 | 82 mm1992 · driest 0 mm in 1999 | 67 |
| June | 38.9°C26 Jun 1970 | -3.9°C2 Jun 1951 | 24 mm2 Jun 1952 | 43 mm1988 · driest 0 mm in 1998 | 66 |
| July | 41.7°C6 Jul 1985 | 1.7°C2 Jul 1968 | 51 mm14 Jul 2018 | 158 mm1998 · driest 0 mm in 1993 | 64 |
| August | 38.3°C11 Aug 1972 | 0.0°C21 Aug 1979 | 51 mm20 Aug 1977 | 137 mm1993 · driest 0 mm in 2008 | 64 |
| September | 37.8°C6 Sep 1954 | -6.7°C22 Sep 2004 | 53 mm7 Sep 2023 | 115 mm2002 · driest 0 mm in 2004 | 69 |
| October | 32.2°C1 Oct 1979 | -13.9°C27 Oct 1997 | 64 mm5 Oct 2021 | 140 mm1972 · driest 0 mm in 1999 | 67 |
| November | 26.1°C9 Nov 1980 | -27.8°C28 Nov 1976 | 48 mm13 Nov 1993 | 100 mm1993 · driest 0 mm in 2008 | 65 |
| December | 25.0°C29 Dec 2004 | -28.9°C8 Dec 1978 | 51 mm1 Dec 2007 | 105 mm1965 · driest 0 mm in 2017 | 67 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 26 | <1 | <1 |
| February | 0 | 0 | 24 | <1 | <1 |
| March | <1 | 0 | 22 | <1 | <1 |
| April | 4 | 0 | 14 | <1 | 0 |
| May | 16 | 4 | 3 | <1 | 0 |
| June | 26 | 20 | <1 | <1 | 0 |
| July | 28 | 25 | 0 | <1 | 0 |
| August | 28 | 22 | 0 | 1 | 0 |
| September | 23 | 8 | <1 | <1 | 0 |
| October | 8 | <1 | 6 | <1 | 0 |
| November | <1 | 0 | 21 | <1 | <1 |
| December | 0 | 0 | 26 | <1 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 10% | 2% | 8% | 5.5–12.2°C |
| February | 3% | 9% | 1% | 8% | 8.7–15.0°C |
| March | 21% | 11% | 2% | 7% | 12.9–18.6°C |
| April | 57% | 6% | 1% | 3% | 17.5–22.3°C |
| May | 85% | 6% | 1% | 4% | 22.9–27.2°C |
| June | 96% | 4% | <1% | 2% | 29.2–32.9°C |
| July | 84% | 16% | 3% | 15% | 31.5–34.2°C |
| August | 84% | 15% | 4% | 13% | 29.6–32.6°C |
| September | 88% | 11% | 3% | 8% | 26.2–29.6°C |
| October | 69% | 8% | 2% | 5% | 19.3–24.2°C |
| November | 19% | 8% | 3% | 5% | 12.2–17.5°C |
| December | <1% | 9% | 2% | 5% | 5.8–12.5°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 5289488
- NOAA station
- USC00027488 · SANDERS
- Station distance
- 1.4 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 23 usable years
- Daylight
- Calculated from latitude 35.22°, 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.