September
September · August · June
United States · 1991–2020
September leads for comfortable weather in Tolstoy: typically 23.3°C by day, 8.6°C at night, with 55 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 -4°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 | -4°C | -14.9°C | 8 mm | 2 | 9 h 06 | 5 | Strong coverage |
| February | -2°C | -12.9°C | 15 mm | 3.2 | 10 h 19 | 5 | Strong coverage |
| March | 5.2°C | -6.7°C | 20 mm | 3.7 | 11 h 46 | 5 | Strong coverage |
| April | 13°C | -0.4°C | 48 mm | 6.4 | 13 h 26 | 31 | Strong coverage |
| May | 19.9°C | 6.4°C | 78 mm | 8.3 | 14 h 50 | 60 | Strong coverage |
| June | 25.3°C | 12.3°C | 96 mm | 9 | 15 h 37 | 77 | Strong coverage |
| July | 29.2°C | 15.2°C | 78 mm | 7 | 15 h 19 | 73 | Strong coverage |
| August | 28.3°C | 14°C | 64 mm | 5.8 | 14 h 05 | 78 | Strong coverage |
| September | 23.3°C | 8.6°C | 55 mm | 5.3 | 12 h 28 | 81 | Good coverage |
| October | 14.7°C | 1.5°C | 49 mm | 5.3 | 10 h 52 | 41 | Strong coverage |
| November | 5.6°C | -6°C | 13 mm | 2.8 | 9 h 27 | 5 | Strong coverage |
| December | -1.8°C | -12.3°C | 13 mm | 2.5 | 8 h 46 | 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 | 17.8°C5 Jan 2012 | -36.1°C29 Jan 1966 | 21 mm27 Jan 1944 | 34 mm1982 · driest 0 mm in 1942 | 90 |
| February | 21.1°C25 Feb 1958 | -36.7°C9 Feb 1994 | 31 mm27 Feb 1958 | 57 mm1987 · driest 0 mm in 2021 | 91 |
| March | 29.4°C28 Mar 1946 | -33.3°C1 Mar 1962 | 52 mm28 Mar 2004 | 75 mm1966 · driest 0 mm in 1939 | 89 |
| April | 36.1°C22 Apr 1980 | -17.8°C3 Apr 1936 | 57 mm28 Apr 2014 | 151 mm1986 · driest 1 mm in 1952 | 91 |
| May | 40.0°C28 May 1934 | -8.9°C12 May 1946 | 102 mm27 May 1956 | 163 mm2015 · driest 10 mm in 1940 | 93 |
| June | 42.2°C28 Jun 1931 | 0.0°C3 Jun 1950 | 119 mm13 Jun 2007 | 208 mm2023 · driest 15 mm in 1950 | 93 |
| July | 45.6°C20 Jul 1934 | 3.3°C30 Jul 1971 | 114 mm7 Jul 1994 | 206 mm2019 · driest 5 mm in 1936 | 92 |
| August | 43.9°C9 Aug 1947 | 1.1°C20 Aug 1935 | 88 mm18 Aug 2006 | 146 mm1962 · driest 7 mm in 1959 | 93 |
| September | 41.7°C10 Sep 1931 | -7.2°C26 Sep 1942 | 58 mm2 Sep 1999 | 159 mm1996 · driest 0 mm in 1940 | 90 |
| October | 34.4°C1 Oct 1953 | -17.2°C30 Oct 1991 | 86 mm9 Oct 2001 | 170 mm2013 · driest 0 mm in 1964 | 91 |
| November | 26.7°C8 Nov 1999 | -27.2°C14 Nov 1959 | 57 mm2 Nov 1956 | 95 mm1977 · driest 0 mm in 1932 | 91 |
| December | 20.6°C17 Dec 2004 | -35.6°C31 Dec 1967 | 51 mm29 Dec 2000 | 76 mm2000 · driest 0 mm in 2011 | 90 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 29 | <1 | 4 |
| February | 0 | 0 | 26 | <1 | 4 |
| March | <1 | 0 | 26 | <1 | 2 |
| April | 2 | <1 | 17 | 2 | 1 |
| May | 7 | 2 | 3 | 3 | <1 |
| June | 17 | 6 | 0 | 3 | 0 |
| July | 26 | 13 | 0 | 2 | 0 |
| August | 24 | 12 | 0 | 2 | 0 |
| September | 13 | 5 | <1 | 2 | 0 |
| October | 3 | <1 | 12 | 2 | <1 |
| November | 0 | 0 | 25 | <1 | 2 |
| December | 0 | 0 | 30 | <1 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 8% | <1% | 2% | -9.9–1.0°C |
| February | 0% | 11% | 1% | 5% | -7.7–4.0°C |
| March | 4% | 13% | 2% | 8% | -0.5–10.1°C |
| April | 20% | 20% | 6% | 20% | 9.9–17.2°C |
| May | 46% | 25% | 7% | 29% | 17.8–24.2°C |
| June | 65% | 29% | 10% | 33% | 23.1–29.7°C |
| July | 78% | 21% | 7% | 17% | 27.5–33.3°C |
| August | 80% | 18% | 6% | 15% | 26.5–32.8°C |
| September | 66% | 16% | 5% | 11% | 20.6–27.1°C |
| October | 31% | 13% | 4% | 9% | 13.0–19.4°C |
| November | 2% | 10% | <1% | 5% | 1.4–9.6°C |
| December | <1% | 9% | <1% | 4% | -6.6–2.8°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