September
September · June · May
United States · 1991–2020
September leads for comfortable weather in Erda: typically 26.7°C by day, 11.7°C at night, with 28 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · May
July · August · June
October · May · September
The weakest month is January, scoring 5 against September’s 84 — days reach only 4.3°C, 20° 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 | 4.3°C | -6°C | 39 mm | 6.6 | 9 h 34 | 5 | Strong coverage |
| February | 7.4°C | -3.8°C | 41 mm | 6 | 10 h 35 | 8 | Strong coverage |
| March | 12.8°C | 0.3°C | 56 mm | 7.3 | 11 h 49 | 30 | Strong coverage |
| April | 16.7°C | 3.4°C | 59 mm | 7.8 | 13 h 14 | 47 | Strong coverage |
| May | 22.2°C | 8.2°C | 60 mm | 7.3 | 14 h 25 | 75 | Strong coverage |
| June | 28.4°C | 13.3°C | 27 mm | 4 | 15 h 04 | 82 | Strong coverage |
| July | 33.6°C | 18°C | 19 mm | 3.4 | 14 h 48 | 63 | Strong coverage |
| August | 32.5°C | 17°C | 18 mm | 3.7 | 13 h 47 | 68 | Strong coverage |
| September | 26.7°C | 11.7°C | 28 mm | 4.4 | 12 h 25 | 84 | Strong coverage |
| October | 18.4°C | 4.8°C | 38 mm | 5.2 | 11 h 03 | 61 | Strong coverage |
| November | 10.2°C | -1.3°C | 40 mm | 5.6 | 9 h 52 | 22 | Strong coverage |
| December | 4.3°C | -5.7°C | 43 mm | 6.9 | 9 h 17 | 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 | 19.4°C31 Jan 2003 | -26.1°C22 Jan 1937 | 46 mm5 Jan 1904 | 121 mm1916 · driest 0 mm in 1961 | 130 |
| February | 21.1°C28 Feb 1972 | -26.7°C10 Feb 1933 | 39 mm24 Feb 1998 | 126 mm1998 · driest 3 mm in 1988 | 128 |
| March | 27.8°C21 Mar 2026 | -16.1°C6 Mar 1945 | 63 mm23 Mar 2017 | 124 mm1938 · driest 2 mm in 1934 | 130 |
| April | 31.1°C27 Apr 2000 | -10.0°C1 Apr 1920 | 66 mm2 Apr 1986 | 152 mm1986 · driest 0 mm in 1896 | 130 |
| May | 36.1°C29 May 2003 | -6.1°C6 May 1965 | 94 mm30 May 2005 | 191 mm2005 · driest 1 mm in 1969 | 130 |
| June | 40.0°C15 Jun 2021 | -2.8°C6 Jun 1995 | 50 mm5 Jun 2008 | 93 mm1947 · driest 0 mm in 2013 | 131 |
| July | 41.1°C31 Jul 2000 | 0.0°C3 Jul 1902 | 41 mm6 Jul 1937 | 88 mm1984 · driest 0 mm in 1972 | 131 |
| August | 40.6°C1 Aug 2000 | 2.2°C7 Aug 1910 | 36 mm4 Aug 1954 | 103 mm1983 · driest 0 mm in 1985 | 130 |
| September | 38.9°C7 Sep 2022 | -3.3°C21 Sep 1909 | 58 mm23 Sep 2000 | 205 mm1982 · driest 0 mm in 1928 | 130 |
| October | 33.9°C14 Oct 1989 | -12.2°C30 Oct 2019 | 70 mm4 Oct 2025 | 135 mm1981 · driest 0 mm in 1978 | 130 |
| November | 26.7°C3 Nov 1909 | -21.7°C16 Nov 1955 | 67 mm15 Nov 1958 | 125 mm1983 · driest 0 mm in 1939 | 130 |
| December | 21.1°C1 Dec 1995 | -26.7°C23 Dec 1990 | 49 mm26 Dec 2003 | 118 mm2010 · driest 0 mm in 1900 | 129 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 28 | 1 | 5 |
| February | 0 | 0 | 23 | 1 | 5 |
| March | <1 | 0 | 17 | 2 | 4 |
| April | 2 | <1 | 8 | 2 | 2 |
| May | 11 | 3 | 1 | 2 | <1 |
| June | 23 | 13 | <1 | <1 | 0 |
| July | 30 | 27 | 0 | <1 | 0 |
| August | 30 | 26 | 0 | <1 | 0 |
| September | 21 | 9 | <1 | <1 | 0 |
| October | 4 | <1 | 4 | 1 | <1 |
| November | 0 | 0 | 19 | 1 | 4 |
| December | 0 | 0 | 27 | 1 | 6 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 20% | 3% | 16% | 0.5–6.5°C |
| February | <1% | 23% | 4% | 21% | 3.0–9.2°C |
| March | 5% | 24% | 6% | 23% | 7.9–14.2°C |
| April | 27% | 25% | 7% | 23% | 13.3–18.9°C |
| May | 56% | 22% | 5% | 21% | 17.9–24.2°C |
| June | 82% | 14% | 3% | 10% | 24.1–30.5°C |
| July | 88% | 12% | 2% | 9% | 29.7–34.9°C |
| August | 86% | 14% | 2% | 10% | 28.8–32.8°C |
| September | 78% | 14% | 3% | 10% | 22.9–27.8°C |
| October | 36% | 17% | 5% | 14% | 14.6–20.3°C |
| November | 3% | 19% | 5% | 15% | 6.9–12.5°C |
| December | 0% | 20% | 4% | 17% | 1.4–7.2°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