September
September · May · June
United States · 1991–2020
September leads for comfortable weather in New Pekin: typically 26.7°C by day, 12.6°C at night, with 86 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · June
July · August · June
October · April · September
The weakest month is January, scoring 5 against September’s 77 — days reach only 5.2°C, 19° 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 | 5.2°C | -4.6°C | 98 mm | 7.8 | 9 h 45 | 5 | Good coverage |
| February | 8°C | -3.1°C | 72 mm | 7.4 | 10 h 42 | 5 | Good coverage |
| March | 13.4°C | 1°C | 111 mm | 9.1 | 11 h 50 | 24 | Good coverage |
| April | 19.6°C | 6.1°C | 119 mm | 9.6 | 13 h 09 | 52 | Good coverage |
| May | 24.3°C | 11.5°C | 148 mm | 10.7 | 14 h 15 | 70 | Good coverage |
| June | 28.3°C | 16.2°C | 98 mm | 8.2 | 14 h 50 | 70 | Good coverage |
| July | 30.3°C | 18°C | 86 mm | 7.4 | 14 h 36 | 63 | Good coverage |
| August | 30.4°C | 17.5°C | 87 mm | 6.1 | 13 h 40 | 64 | Good coverage |
| September | 26.7°C | 12.6°C | 86 mm | 5.6 | 12 h 23 | 77 | Good coverage |
| October | 20.8°C | 7°C | 69 mm | 5.4 | 11 h 07 | 68 | Good coverage |
| November | 13.1°C | 2°C | 83 mm | 6.9 | 10 h 02 | 30 | Good coverage |
| December | 6.5°C | -2.7°C | 96 mm | 7.8 | 9 h 29 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 24.4°C24 Jan 1943 | -33.9°C19 Jan 1994 | 104 mm21 Jan 1959 | 451 mm1937 · driest 15 mm in 1981 | 108 |
| February | 25.6°C29 Feb 1972 | -35.6°C2 Feb 1951 | 89 mm18 Feb 2000 | 213 mm1955 · driest 10 mm in 1947 | 107 |
| March | 36.1°C27 Mar 1910 | -23.9°C6 Mar 1960 | 137 mm9 Mar 1964 | 369 mm1964 · driest 5 mm in 1910 | 108 |
| April | 35.0°C23 Apr 1925 | -11.7°C9 Apr 1917 | 126 mm29 Apr 1996 | 294 mm1996 · driest 14 mm in 1962 | 107 |
| May | 36.7°C18 May 1962 | -3.9°C8 May 1928 | 97 mm25 May 1995 | 295 mm1995 · driest 17 mm in 1941 | 108 |
| June | 39.4°C28 Jun 1944 | 2.2°C1 Jun 1966 | 107 mm18 Jun 1964 | 244 mm1949 · driest 9 mm in 1933 | 106 |
| July | 44.4°C22 Jul 1901 | 4.4°C27 Jul 1911 | 183 mm20 Jul 1988 | 283 mm1988 · driest 6 mm in 1901 | 106 |
| August | 40.6°C10 Aug 1911 | 2.8°C28 Aug 1917 | 91 mm15 Aug 1949 | 204 mm1914 · driest 4 mm in 2011 | 106 |
| September | 40.6°C2 Sep 1913 | -3.9°C30 Sep 1899 | 89 mm4 Sep 1991 | 203 mm1932 · driest 0 mm in 2004 | 105 |
| October | 35.0°C3 Oct 1900 | -10.0°C29 Oct 1925 | 122 mm5 Oct 1910 | 233 mm1983 · driest 4 mm in 1908 | 106 |
| November | 28.3°C1 Nov 1950 | -19.4°C25 Nov 1950 | 76 mm7 Nov 1925 | 206 mm1921 · driest 2 mm in 2001 | 106 |
| December | 23.9°C2 Dec 1982 | -30.6°C11 Dec 1917 | 111 mm30 Dec 1932 | 202 mm1932 · driest 13 mm in 1989 | 106 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 24 | 3 | 3 |
| February | 0 | 0 | 21 | 3 | 2 |
| March | <1 | <1 | 15 | 3 | 1 |
| April | 5 | <1 | 5 | 4 | <1 |
| May | 15 | 2 | <1 | 5 | 0 |
| June | 25 | 11 | 0 | 4 | 0 |
| July | 30 | 18 | 0 | 3 | 0 |
| August | 29 | 17 | 0 | 2 | 0 |
| September | 20 | 8 | <1 | 3 | 0 |
| October | 7 | <1 | 4 | 2 | <1 |
| November | <1 | 0 | 12 | 3 | <1 |
| December | 0 | 0 | 20 | 3 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 29% | 10% | 34% | 1.7–8.8°C |
| February | 2% | 29% | 9% | 36% | 2.7–10.4°C |
| March | 13% | 34% | 13% | 44% | 9.0–16.8°C |
| April | 34% | 34% | 12% | 44% | 16.9–21.4°C |
| May | 57% | 33% | 12% | 43% | 21.8–27.2°C |
| June | 70% | 29% | 12% | 33% | 27.0–31.5°C |
| July | 75% | 25% | 11% | 26% | 29.1–33.4°C |
| August | 77% | 23% | 9% | 22% | 28.4–32.6°C |
| September | 75% | 21% | 9% | 18% | 24.8–30.2°C |
| October | 50% | 21% | 8% | 20% | 18.3–23.2°C |
| November | 12% | 26% | 10% | 28% | 10.4–15.8°C |
| December | 1% | 28% | 11% | 34% | 3.2–9.7°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