September
September · June · August
82climate match
United States · 1991–2020
Best time to visit
Clarkston.
September leads for comfortable weather in Clarkston: typically 23.7°C by day, 6°C at night, with 29 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high23.7°C
Typical low6°C
Rain in September29 mm
July
July · August · September
68climate match
May
May · September · June
80climate match
The weakest month is January, scoring 5 against September’s 82 — days reach only 1.7°C, 22° below the 24°C the score treats as ideal, and nights drop to -10°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
51.7° / -10°
Feb
53.7° / -8.7°
Mar
189.7° / -4.1°
Apr
3714.2° / -0.2°
May
5919.6° / 4.7°
Jun
7924° / 8.5°
Jul
7230° / 11.4°
Aug
7329.5° / 10.2°
Sep
8223.7° / 6°
Oct
4315.4° / 0.1°
Nov
56.5° / -5.8°
Dec
51.6° / -9.7°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 1.7°C | -10°C | 12 mm | 2.8 | 9 h 00 | 5 | Strong coverage |
| February | 3.7°C | -8.7°C | 8 mm | 2.4 | 10 h 16 | 5 | Strong coverage |
| March | 9.7°C | -4.1°C | 17 mm | 3.8 | 11 h 45 | 18 | Strong coverage |
| April | 14.2°C | -0.2°C | 37 mm | 6.1 | 13 h 28 | 37 | Strong coverage |
| May | 19.6°C | 4.7°C | 55 mm | 8.1 | 14 h 55 | 59 | Strong coverage |
| June | 24°C | 8.5°C | 62 mm | 8.4 | 15 h 44 | 79 | Strong coverage |
| July | 30°C | 11.4°C | 34 mm | 5.2 | 15 h 25 | 72 | Strong coverage |
| August | 29.5°C | 10.2°C | 22 mm | 3.8 | 14 h 09 | 73 | Strong coverage |
| September | 23.7°C | 6°C | 29 mm | 4.5 | 12 h 29 | 82 | Strong coverage |
| October | 15.4°C | 0.1°C | 28 mm | 4.8 | 10 h 50 | 43 | Strong coverage |
| November | 6.5°C | -5.8°C | 16 mm | 3.3 | 9 h 23 | 5 | Strong coverage |
| December | 1.6°C | -9.7°C | 16 mm | 3.3 | 8 h 39 | 5 | Strong coverage |
What has changed
Clarkston runs -1.1°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
+0.4
Feb
-3.7
Mar
+0.5
Apr
-1.7
May
-2.0
Jun
-1.5
Jul
-0.5
Aug
-1.0
Sep
+0.3
Oct
-1.8
Nov
-1.2
Dec
-1.4
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 18.9°C29 Jan 1935 | -41.1°C26 Jan 1957 | 24 mm3 Jan 2002 | 36 mm2003 · driest 0 mm in 1981 | 99 |
| February | 24.4°C27 Feb 1932 | -40.0°C9 Feb 1933 | 13 mm14 Feb 2003 | 49 mm1959 · driest 0 mm in 1977 | 98 |
| March | 25.6°C30 Mar 1978 | -36.7°C4 Mar 2019 | 23 mm29 Mar 1967 | 48 mm1989 · driest 0 mm in 2001 | 97 |
| April | 32.2°C20 Apr 1935 | -20.6°C5 Apr 1936 | 40 mm30 Apr 1951 | 85 mm2003 · driest 0 mm in 1977 | 97 |
| May | 35.6°C19 May 1954 | -6.7°C2 May 1954 | 51 mm25 May 1980 | 140 mm1981 · driest 0 mm in 2001 | 98 |
| June | 39.4°C26 Jun 1927 | -1.1°C6 Jun 1943 | 42 mm3 Jun 1953 | 159 mm1944 · driest 8 mm in 1961 | 98 |
| July | 42.8°C22 Jul 1931 | 0.0°C8 Jul 1981 | 56 mm23 Jul 2005 | 142 mm1993 · driest 1 mm in 1996 | 98 |
| August | 41.1°C29 Aug 1924 | -2.8°C25 Aug 1992 | 41 mm21 Aug 1954 | 105 mm1951 · driest 0 mm in 1924 | 100 |
| September | 37.8°C3 Sep 2022 | -10.6°C25 Sep 1926 | 43 mm30 Sep 1977 | 91 mm1947 · driest 0 mm in 2021 | 99 |
| October | 34.4°C16 Oct 1926 | -23.9°C26 Oct 2020 | 31 mm27 Oct 2015 | 88 mm2006 · driest 0 mm in 2003 | 97 |
| November | 25.0°C12 Nov 1999 | -31.7°C13 Nov 1959 | 41 mm23 Nov 2002 | 44 mm2002 · driest 0 mm in 1999 | 97 |
| December | 20.0°C1 Dec 2021 | -48.3°C31 Dec 1927 | 51 mm13 Dec 2006 | 58 mm2006 · driest 0 mm in 1932 | 98 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 29 | <1 | 2 |
| February | 0 | 0 | 26 | <1 | 2 |
| March | 0 | 0 | 24 | <1 | 2 |
| April | 1 | 0 | 16 | 1 | <1 |
| May | 6 | <1 | 4 | 2 | <1 |
| June | 14 | 4 | <1 | 2 | 0 |
| July | 26 | 17 | 0 | <1 | 0 |
| August | 26 | 16 | <1 | <1 | 0 |
| September | 14 | 4 | 3 | 1 | 0 |
| October | 3 | <1 | 15 | <1 | <1 |
| November | 0 | 0 | 24 | <1 | 1 |
| December | 0 | 0 | 27 | <1 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 9% | <1% | 3% | -4.2–5.7°C |
| February | 0% | 8% | <1% | 3% | -0.4–9.1°C |
| March | 4% | 12% | <1% | 6% | 5.1–13.1°C |
| April | 22% | 19% | 3% | 17% | 12.3–18.7°C |
| May | 45% | 27% | 5% | 34% | 17.4–23.9°C |
| June | 64% | 28% | 6% | 35% | 22.3–27.8°C |
| July | 83% | 17% | 3% | 13% | 28.3–33.3°C |
| August | 84% | 15% | 2% | 12% | 27.4–32.1°C |
| September | 67% | 17% | 3% | 16% | 20.8–26.6°C |
| October | 33% | 14% | 2% | 11% | 13.6–19.9°C |
| November | 2% | 11% | <1% | 5% | 3.6–11.2°C |
| December | 0% | 9% | <1% | 2% | -1.8–5.8°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 5645283
- NOAA station
- USC00248363 · TRIDENT
- Station distance
- 10.4 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 26 usable years
- Daylight
- Calculated from latitude 46.03°, 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.