September
September · August · June
78climate match
United States · 1991–2020
Best time to visit
Charles City.
September leads for comfortable weather in Charles City: typically 23.5°C by day, 10.6°C at night, with 97 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high23.5°C
Typical low10.6°C
Rain in September97 mm
July
July · August · June
63climate match
September
September · May · October
73climate match
The weakest month is January, scoring 5 against September’s 78 — days reach only -3.6°C, 28° 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
5-3.6° / -13°
Feb
5-1° / -10.7°
Mar
56.5° / -3.9°
Apr
3415° / 2.5°
May
6121.3° / 9°
Jun
6826.4° / 14.6°
Jul
6628° / 16.6°
Aug
7526.8° / 15.4°
Sep
7823.5° / 10.6°
Oct
4516° / 3.8°
Nov
86.9° / -3.1°
Dec
5-0.7° / -9.5°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | -3.6°C | -13°C | 26 mm | 5.4 | 9 h 19 | 5 | Strong coverage |
| February | -1°C | -10.7°C | 29 mm | 5.2 | 10 h 27 | 5 | Strong coverage |
| March | 6.5°C | -3.9°C | 49 mm | 6.8 | 11 h 47 | 5 | Strong coverage |
| April | 15°C | 2.5°C | 95 mm | 8.7 | 13 h 20 | 34 | Strong coverage |
| May | 21.3°C | 9°C | 128 mm | 10.7 | 14 h 38 | 61 | Strong coverage |
| June | 26.4°C | 14.6°C | 156 mm | 10.3 | 15 h 21 | 68 | Strong coverage |
| July | 28°C | 16.6°C | 125 mm | 8.2 | 15 h 04 | 66 | Strong coverage |
| August | 26.8°C | 15.4°C | 109 mm | 7.7 | 13 h 56 | 75 | Strong coverage |
| September | 23.5°C | 10.6°C | 97 mm | 7.2 | 12 h 26 | 78 | Strong coverage |
| October | 16°C | 3.8°C | 69 mm | 7.4 | 10 h 57 | 45 | Strong coverage |
| November | 6.9°C | -3.1°C | 44 mm | 5.4 | 9 h 39 | 8 | Strong coverage |
| December | -0.7°C | -9.5°C | 34 mm | 5.5 | 9 h 01 | 5 | Strong coverage |
What has changed
Charles City runs -0.3°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
+0.8
Feb
-0.8
Mar
+0.9
Apr
-1.4
May
-1.1
Jun
-0.7
Jul
-1.4
Aug
-1.5
Sep
+0.5
Oct
-1.1
Nov
+0.3
Dec
+2.2
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 17.2°C26 Jan 2002 | -36.7°C16 Jan 2009 | 36 mm4 Jan 1971 | 74 mm1949 · driest 0 mm in 1903 | 89 |
| February | 23.9°C26 Feb 2024 | -35.6°C2 Feb 1996 | 40 mm25 Feb 2007 | 84 mm2007 · driest 0 mm in 1987 | 89 |
| March | 30.0°C29 Mar 1895 | -35.6°C1 Mar 1962 | 61 mm26 Mar 2004 | 137 mm2004 · driest 7 mm in 1994 | 88 |
| April | 34.4°C22 Apr 1980 | -16.1°C6 Apr 1982 | 78 mm18 Apr 1976 | 196 mm1991 · driest 17 mm in 1997 | 89 |
| May | 36.7°C14 May 2013 | -6.1°C3 May 2005 | 90 mm10 May 1963 | 259 mm2004 · driest 31 mm in 1894 | 89 |
| June | 38.9°C8 Jun 1985 | 1.1°C12 Jun 1903 | 93 mm19 Jun 1904 | 300 mm2018 · driest 10 mm in 2023 | 90 |
| July | 42.2°C21 Jul 1901 | 3.9°C30 Jul 1899 | 169 mm21 Jul 1999 | 470 mm1999 · driest 12 mm in 2012 | 90 |
| August | 40.0°C17 Aug 1988 | 2.2°C29 Aug 1893 | 160 mm10 Aug 1980 | 345 mm1979 · driest 19 mm in 2003 | 89 |
| September | 37.2°C9 Sep 1955 | -7.2°C30 Sep 1899 | 161 mm22 Sep 2016 | 402 mm2016 · driest 8 mm in 1952 | 89 |
| October | 35.0°C5 Oct 1963 | -12.8°C30 Oct 1895 | 82 mm9 Oct 1970 | 201 mm2009 · driest 0 mm in 1952 | 89 |
| November | 25.6°C8 Nov 1999 | -25.6°C26 Nov 1977 | 71 mm1 Nov 1991 | 136 mm1991 · driest 0 mm in 2002 | 88 |
| December | 20.0°C15 Dec 2021 | -33.9°C25 Dec 2000 | 38 mm14 Dec 2015 | 112 mm2015 · driest 1 mm in 1898 | 88 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | <1 | 7 |
| February | 0 | 0 | 27 | <1 | 6 |
| March | <1 | 0 | 24 | 2 | 4 |
| April | 2 | <1 | 10 | 3 | 1 |
| May | 9 | 2 | 1 | 4 | <1 |
| June | 20 | 6 | 0 | 5 | 0 |
| July | 26 | 10 | 0 | 4 | 0 |
| August | 23 | 6 | 0 | 3 | 0 |
| September | 13 | 3 | <1 | 3 | 0 |
| October | 3 | <1 | 8 | 2 | <1 |
| November | <1 | 0 | 22 | 2 | 2 |
| December | 0 | 0 | 29 | 1 | 6 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 16% | 2% | 10% | -8.0–-0.4°C |
| February | 0% | 16% | 3% | 11% | -5.9–3.8°C |
| March | 3% | 23% | 6% | 22% | 1.7–9.7°C |
| April | 20% | 29% | 10% | 36% | 11.0–18.4°C |
| May | 47% | 31% | 12% | 38% | 19.5–24.1°C |
| June | 66% | 32% | 14% | 40% | 24.9–28.4°C |
| July | 74% | 26% | 11% | 24% | 26.6–30.9°C |
| August | 75% | 25% | 10% | 25% | 25.5–29.7°C |
| September | 61% | 24% | 9% | 25% | 21.5–25.8°C |
| October | 28% | 21% | 7% | 21% | 14.0–19.6°C |
| November | 3% | 18% | 5% | 14% | 2.8–9.8°C |
| December | 0% | 17% | 3% | 12% | -5.1–3.0°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 4851163
- NOAA station
- USC00131402 · CHARLES CITY
- Station distance
- 0.7 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 30 usable years
- Daylight
- Calculated from latitude 43.07°, 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.