September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Lavon: typically 25.1°C by day, 3.6°C at night, with 16 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · August
August · July · June
May · September · June
The weakest month is January, scoring 5 against September’s 76 — days reach only 4.6°C, 19° below the 24°C the score treats as ideal, and nights drop to -11.1°C.
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 | 4.6°C | -11.1°C | 19 mm | 4 | 9 h 41 | 5 | Strong coverage |
| February | 6.1°C | -9.1°C | 21 mm | 4.7 | 10 h 39 | 5 | Strong coverage |
| March | 10.8°C | -5.2°C | 25 mm | 5 | 11 h 49 | 18 | Strong coverage |
| April | 14.5°C | -2.7°C | 27 mm | 5.7 | 13 h 11 | 34 | Strong coverage |
| May | 20°C | 0.9°C | 27 mm | 4.9 | 14 h 18 | 60 | Strong coverage |
| June | 26.8°C | 5°C | 14 mm | 2.7 | 14 h 55 | 73 | Strong coverage |
| July | 31.4°C | 9.3°C | 16 mm | 3 | 14 h 41 | 65 | Strong coverage |
| August | 30.3°C | 8.5°C | 20 mm | 3.5 | 13 h 42 | 67 | Strong coverage |
| September | 25.1°C | 3.6°C | 16 mm | 3 | 12 h 24 | 76 | Strong coverage |
| October | 17.6°C | -2.2°C | 20 mm | 3.4 | 11 h 06 | 47 | Strong coverage |
| November | 10°C | -7.3°C | 16 mm | 3.2 | 9 h 58 | 14 | Strong coverage |
| December | 4.4°C | -11.4°C | 17 mm | 3.6 | 9 h 25 | 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 | 20.0°C25 Jan 1951 | -32.8°C25 Jan 1949 | 38 mm13 Jan 1907 | 90 mm2023 · driest 0 mm in 1948 | 105 |
| February | 19.4°C5 Feb 2025 | -34.4°C6 Feb 1989 | 35 mm25 Feb 1969 | 95 mm1897 · driest 0 mm in 1972 | 105 |
| March | 28.3°C20 Mar 2026 | -25.0°C3 Mar 1952 | 31 mm5 Mar 1893 | 109 mm1894 · driest 1 mm in 1997 | 105 |
| April | 28.3°C23 Apr 2012 | -20.6°C2 Apr 1982 | 41 mm7 Apr 1900 | 140 mm1900 · driest 0 mm in 1989 | 104 |
| May | 35.0°C31 May 1910 | -13.9°C4 May 1950 | 36 mm31 May 1895 | 90 mm1896 · driest 0 mm in 1948 | 104 |
| June | 37.2°C22 Jun 1954 | -7.8°C14 Jun 1976 | 40 mm26 Jun 2024 | 90 mm1963 · driest 0 mm in 1893 | 104 |
| July | 38.3°C18 Jul 1998 | -2.2°C1 Jul 1997 | 31 mm24 Jul 1952 | 58 mm1987 · driest 0 mm in 1947 | 104 |
| August | 36.7°C2 Aug 2020 | -4.4°C23 Aug 1960 | 53 mm31 Aug 1909 | 76 mm1906 · driest 0 mm in 1985 | 105 |
| September | 36.1°C6 Sep 2022 | -9.4°C21 Sep 1895 | 64 mm26 Sep 1982 | 127 mm1982 · driest 0 mm in 1953 | 103 |
| October | 30.0°C1 Oct 2010 | -21.6°C30 Oct 2019 | 28 mm1 Oct 1976 | 93 mm1981 · driest 0 mm in 2014 | 103 |
| November | 25.6°C9 Nov 1906 | -28.9°C25 Nov 2010 | 31 mm24 Nov 1897 | 61 mm1902 · driest 0 mm in 1894 | 103 |
| December | 19.4°C3 Dec 1958 | -33.9°C22 Dec 1990 | 33 mm31 Dec 1909 | 85 mm2010 · driest 0 mm in 1962 | 101 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | <1 | 6 |
| February | 0 | 0 | 27 | <1 | 6 |
| March | 0 | 0 | 28 | <1 | 5 |
| April | <1 | 0 | 24 | <1 | 4 |
| May | 7 | <1 | 14 | <1 | 1 |
| June | 21 | 10 | 3 | <1 | <1 |
| July | 30 | 23 | <1 | <1 | 0 |
| August | 30 | 20 | <1 | <1 | 0 |
| September | 19 | 3 | 7 | <1 | 0 |
| October | 3 | 0 | 23 | <1 | 1 |
| November | 0 | 0 | 28 | <1 | 4 |
| December | 0 | 0 | 30 | <1 | 6 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 13% | 1% | 10% | 0.9–7.4°C |
| February | 0% | 16% | 1% | 15% | 2.0–8.8°C |
| March | 3% | 18% | 2% | 16% | 5.8–13.1°C |
| April | 19% | 16% | 2% | 14% | 11.3–17.2°C |
| May | 53% | 16% | 2% | 14% | 16.4–22.6°C |
| June | 84% | 9% | 1% | 5% | 22.5–29.3°C |
| July | 90% | 10% | 1% | 7% | 29.3–32.7°C |
| August | 87% | 12% | 2% | 10% | 27.6–31.2°C |
| September | 79% | 10% | 2% | 7% | 21.9–26.8°C |
| October | 39% | 11% | 2% | 9% | 14.2–20.4°C |
| November | 4% | 11% | 2% | 8% | 6.4–13.1°C |
| December | 0% | 12% | 1% | 7% | 2.0–8.5°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