September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Cedar Grove: typically 22.7°C by day, 12.1°C at night, with 77 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · August
July · August · June
May · September · October
The weakest month is January, scoring 5 against September’s 81 — days reach only -4.7°C, 29° below the 24°C the score treats as ideal.
Month by month
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | -4.7°C | -13.2°C | 23 mm | 5.5 | 9 h 09 | 5 | Strong coverage |
| February | -2°C | -10.9°C | 22 mm | 4.6 | 10 h 21 | 5 | Strong coverage |
| March | 5.4°C | -4.1°C | 43 mm | 6.6 | 11 h 46 | 5 | Strong coverage |
| April | 13.7°C | 2.8°C | 74 mm | 8.8 | 13 h 25 | 33 | Strong coverage |
| May | 20.6°C | 9.7°C | 99 mm | 10 | 14 h 48 | 64 | Strong coverage |
| June | 26.1°C | 15.5°C | 116 mm | 9.3 | 15 h 34 | 75 | Strong coverage |
| July | 28.5°C | 18.2°C | 103 mm | 8.4 | 15 h 16 | 65 | Strong coverage |
| August | 27.1°C | 16.9°C | 110 mm | 7.6 | 14 h 03 | 72 | Strong coverage |
| September | 22.7°C | 12.1°C | 77 mm | 7.3 | 12 h 28 | 81 | Strong coverage |
| October | 14.5°C | 4.8°C | 65 mm | 6.9 | 10 h 53 | 42 | Strong coverage |
| November | 5.5°C | -2.6°C | 41 mm | 5.7 | 9 h 30 | 5 | Strong coverage |
| December | -1.8°C | -9.5°C | 30 mm | 5.7 | 8 h 49 | 5 | Strong coverage |
What has changed
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.
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 14.4°C25 Jan 1944 | -36.7°C19 Jan 1970 | 31 mm24 Jan 1967 | 92 mm1967 · driest 3 mm in 1990 | 88 |
| February | 18.3°C26 Feb 2024 | -35.6°C2 Feb 1996 | 27 mm8 Feb 1966 | 65 mm2019 · driest 2 mm in 1964 | 88 |
| March | 28.3°C30 Mar 1968 | -35.6°C1 Mar 1962 | 41 mm1 Mar 1965 | 121 mm1965 · driest 8 mm in 1994 | 88 |
| April | 35.0°C21 Apr 1980 | -16.7°C13 Apr 1962 | 66 mm6 Apr 2006 | 178 mm2001 · driest 4 mm in 1987 | 89 |
| May | 37.8°C28 May 2018 | -7.8°C3 May 1967 | 66 mm24 May 2012 | 237 mm2012 · driest 14 mm in 2009 | 89 |
| June | 39.4°C7 Jun 2011 | 1.1°C3 Jun 1945 | 105 mm19 Jun 2014 | 289 mm2014 · driest 6 mm in 1988 | 89 |
| July | 40.6°C31 Jul 1988 | 6.1°C4 Jul 1972 | 232 mm23 Jul 1987 | 455 mm1987 · driest 15 mm in 1975 | 89 |
| August | 38.9°C4 Aug 1947 | 3.9°C19 Aug 1967 | 185 mm30 Aug 1977 | 237 mm2007 · driest 11 mm in 1946 | 88 |
| September | 36.7°C7 Sep 1976 | -3.3°C30 Sep 1939 | 84 mm1 Sep 1942 | 191 mm1942 · driest 2 mm in 2024 | 88 |
| October | 33.3°C1 Oct 2023 | -10.6°C27 Oct 1997 | 117 mm4 Oct 2005 | 145 mm1971 · driest 0 mm in 1952 | 88 |
| November | 25.0°C8 Nov 1999 | -27.2°C30 Nov 1964 | 64 mm11 Nov 1940 | 135 mm1991 · driest 1 mm in 1939 | 88 |
| December | 20.0°C1 Dec 1998 | -33.9°C19 Dec 1983 | 34 mm25 Dec 1982 | 109 mm1982 · driest 0 mm in 1943 | 88 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 31 | <1 | 8 |
| February | 0 | 0 | 27 | <1 | 6 |
| March | <1 | 0 | 24 | 1 | 5 |
| April | 1 | <1 | 9 | 3 | 2 |
| May | 7 | 2 | <1 | 3 | <1 |
| June | 19 | 6 | 0 | 4 | 0 |
| July | 27 | 12 | 0 | 3 | 0 |
| August | 23 | 7 | 0 | 4 | 0 |
| September | 11 | 3 | <1 | 2 | 0 |
| October | 2 | <1 | 6 | 2 | <1 |
| November | 0 | 0 | 21 | 1 | 4 |
| December | 0 | 0 | 30 | <1 | 8 |
The best month has moved. On the 1961–1990 numbers the strongest month here was June (scoring 82); on 2011–2025 it is September (94). Both are scored the same way, from the same station — only the climate underneath changed.
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 16% | 1% | 12% | -9.6–-1.6°C |
| February | 0% | 16% | 2% | 13% | -6.4–1.7°C |
| March | 2% | 22% | 4% | 22% | 0.2–9.5°C |
| April | 16% | 27% | 7% | 31% | 10.0–17.1°C |
| May | 42% | 30% | 9% | 36% | 18.2–23.5°C |
| June | 63% | 31% | 12% | 39% | 23.8–28.3°C |
| July | 74% | 26% | 10% | 26% | 26.6–30.9°C |
| August | 74% | 25% | 10% | 25% | 25.2–29.3°C |
| September | 53% | 23% | 7% | 25% | 19.9–24.8°C |
| October | 21% | 19% | 6% | 17% | 12.4–17.9°C |
| November | 2% | 18% | 4% | 17% | 1.3–8.4°C |
| December | 0% | 18% | 2% | 12% | -6.3–1.2°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