September
September · August · June
United States · 1991–2020
September leads for comfortable weather in Birchwood Estates: typically 23.7°C by day, 10.3°C at night, with 84 mm of rain. Based on measured 1991–2020 NOAA station history.
September · August · June
July · August · June
September · May · October
The weakest month is January, scoring 5 against September’s 81 — days reach only -3.8°C, 28° 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 | -3.8°C | -13.8°C | 18 mm | 3.9 | 9 h 19 | 5 | Strong coverage |
| February | -1.2°C | -11.3°C | 20 mm | 4.1 | 10 h 27 | 5 | Strong coverage |
| March | 6.1°C | -4.5°C | 44 mm | 5.4 | 11 h 47 | 5 | Strong coverage |
| April | 14.3°C | 1.7°C | 89 mm | 8 | 13 h 20 | 32 | Strong coverage |
| May | 21°C | 8.7°C | 108 mm | 10.6 | 14 h 38 | 62 | Strong coverage |
| June | 26.8°C | 14.7°C | 117 mm | 10 | 15 h 21 | 72 | Strong coverage |
| July | 28.7°C | 16.7°C | 95 mm | 7.5 | 15 h 04 | 69 | Strong coverage |
| August | 27.2°C | 15.2°C | 98 mm | 7.3 | 13 h 57 | 76 | Strong coverage |
| September | 23.7°C | 10.3°C | 84 mm | 6.4 | 12 h 27 | 81 | Strong coverage |
| October | 15.6°C | 3°C | 59 mm | 6.4 | 10 h 57 | 44 | Strong coverage |
| November | 6.4°C | -4.4°C | 36 mm | 4.3 | 9 h 39 | 6 | Strong coverage |
| December | -1.1°C | -10.6°C | 25 mm | 4.6 | 9 h 00 | 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 | 18.9°C25 Jan 1944 | -38.9°C12 Jan 1912 | 25 mm12 Jan 1922 | 68 mm2010 · driest 0 mm in 1946 | 111 |
| February | 21.7°C26 Feb 2024 | -37.8°C9 Feb 1899 | 34 mm28 Feb 1951 | 81 mm1915 · driest 0 mm in 1900 | 116 |
| March | 31.1°C21 Mar 2026 | -33.3°C11 Mar 1948 | 56 mm3 Mar 1985 | 117 mm1977 · driest 2 mm in 1994 | 114 |
| April | 33.9°C29 Apr 2007 | -17.8°C3 Apr 1975 | 76 mm12 Apr 2010 | 178 mm2016 · driest 12 mm in 1942 | 115 |
| May | 42.8°C30 May 1934 | -6.7°C3 May 1967 | 96 mm20 May 1959 | 290 mm1959 · driest 6 mm in 1934 | 114 |
| June | 41.1°C10 Jun 1933 | -1.1°C11 Jun 1896 | 111 mm21 Jun 2024 | 326 mm2010 · driest 15 mm in 1933 | 112 |
| July | 45.0°C17 Jul 1936 | 4.4°C30 Jul 1971 | 119 mm8 Jul 1987 | 271 mm2025 · driest 0 mm in 1947 | 112 |
| August | 43.9°C3 Aug 1930 | 1.1°C20 Aug 1950 | 104 mm10 Aug 1939 | 308 mm1975 · driest 11 mm in 1947 | 113 |
| September | 38.9°C3 Sep 1925 | -6.1°C28 Sep 1942 | 127 mm7 Sep 1964 | 358 mm2004 · driest 2 mm in 1940 | 111 |
| October | 33.9°C5 Oct 1963 | -22.2°C29 Oct 1925 | 83 mm13 Oct 2023 | 208 mm2009 · driest 0 mm in 1952 | 109 |
| November | 26.7°C8 Nov 2006 | -27.2°C14 Nov 1959 | 72 mm26 Nov 1896 | 139 mm2015 · driest 0 mm in 1949 | 110 |
| December | 18.9°C1 Dec 1998 | -34.4°C26 Dec 1914 | 46 mm25 Dec 2016 | 97 mm2016 · driest 2 mm in 1943 | 108 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 31 | <1 | 6 |
| February | 0 | 0 | 27 | <1 | 5 |
| March | <1 | 0 | 25 | 1 | 3 |
| April | 2 | <1 | 12 | 3 | 1 |
| May | 9 | 3 | 1 | 4 | 0 |
| June | 21 | 8 | 0 | 4 | 0 |
| July | 27 | 13 | 0 | 3 | 0 |
| August | 24 | 7 | 0 | 3 | 0 |
| September | 14 | 4 | <1 | 3 | 0 |
| October | 3 | <1 | 10 | 2 | <1 |
| November | <1 | 0 | 24 | 1 | 3 |
| December | 0 | 0 | 30 | <1 | 5 |
The best month has moved. On the 1961–1990 numbers the strongest month here was June (scoring 79); on 2011–2025 it is September (85). 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% | 12% | 1% | 7% | -8.0–0.7°C |
| February | 0% | 13% | 2% | 9% | -5.5–3.7°C |
| March | 4% | 19% | 4% | 17% | 1.6–10.1°C |
| April | 23% | 25% | 8% | 29% | 11.3–18.1°C |
| May | 48% | 30% | 10% | 38% | 18.9–24.7°C |
| June | 66% | 31% | 12% | 35% | 24.8–29.2°C |
| July | 77% | 23% | 9% | 22% | 27.0–32.1°C |
| August | 76% | 24% | 9% | 22% | 26.0–30.7°C |
| September | 63% | 22% | 9% | 22% | 21.4–26.5°C |
| October | 32% | 18% | 5% | 16% | 13.5–20.4°C |
| November | 3% | 15% | 4% | 11% | 2.5–10.1°C |
| December | 0% | 13% | 2% | 8% | -5.2–2.8°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