August
August · July · June
United States · 1991–2020
August leads for comfortable weather in Bellwood: typically 24.4°C by day, 11.8°C at night, with 111 mm of rain. Based on measured 1991–2020 NOAA station history.
August · July · June
July · August · June
September · May · June
The weakest month is January, scoring 5 against August’s 79 — days reach only -5.8°C, 30° 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 | Sea | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|---|
| January | -5.8°C | -16.4°C | 29 mm | 5.6 | 2.1°C | 8 h 57 | 5 | Good coverage |
| February | -3.1°C | -15.3°C | 24 mm | 4.1 | 1.3°C | 10 h 14 | 5 | Good coverage |
| March | 3.7°C | -8.4°C | 33 mm | 4.6 | 1.3°C | 11 h 45 | 5 | Good coverage |
| April | 10.9°C | -1.9°C | 75 mm | 6.6 | 2.0°C | 13 h 30 | 17 | Good coverage |
| May | 18.7°C | 4°C | 85 mm | 8.3 | 3.4°C | 14 h 59 | 51 | Good coverage |
| June | 23.3°C | 9.3°C | 106 mm | 7.9 | 6.5°C | 15 h 48 | 73 | Good coverage |
| July | 26.3°C | 12.8°C | 99 mm | 7.3 | 13.0°C | 15 h 29 | 76 | Good coverage |
| August | 24.4°C | 11.8°C | 111 mm | 6.7 | 17.0°C | 14 h 11 | 79 | Good coverage |
| September | 19.9°C | 7.4°C | 89 mm | 7 | 14.6°C | 12 h 29 | 62 | Good coverage |
| October | 11.9°C | 1.2°C | 84 mm | 7.8 | 9.9°C | 10 h 48 | 24 | Good coverage |
| November | 4.4°C | -4.7°C | 50 mm | 5 | 6.1°C | 9 h 19 | 5 | Good coverage |
| December | -3.4°C | -12.3°C | 46 mm | 6.6 | 3.5°C | 8 h 35 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 11.1°C24 Jan 1942 | -39.4°C11 Jan 1979 | 33 mm26 Jan 2010 | 52 mm1939 · driest 0 mm in 2012 | 41 |
| February | 13.3°C27 Feb 2024 | -41.7°C21 Feb 1939 | 47 mm26 Feb 2001 | 84 mm2002 · driest 3 mm in 2020 | 43 |
| March | 26.7°C29 Mar 1946 | -36.1°C18 Mar 1939 | 44 mm28 Mar 1998 | 88 mm1998 · driest 1 mm in 2010 | 42 |
| April | 30.0°C17 Apr 2002 | -18.3°C8 Apr 1972 | 64 mm12 Apr 2002 | 206 mm2001 · driest 5 mm in 1929 | 42 |
| May | 36.1°C30 May 1939 | -8.3°C10 May 1933 | 69 mm27 May 2020 | 153 mm1942 · driest 0 mm in 1928 | 43 |
| June | 38.3°C20 Jun 1933 | -6.1°C3 Jun 1929 | 90 mm17 Jun 2018 | 236 mm2024 · driest 17 mm in 2022 | 43 |
| July | 40.6°C11 Jul 1936 | -1.1°C4 Jul 1932 | 136 mm9 Jul 2020 | 272 mm2020 · driest 5 mm in 2015 | 43 |
| August | 37.2°C24 Aug 1948 | -2.2°C29 Aug 1934 | 120 mm31 Aug 2000 | 242 mm2000 · driest 4 mm in 1930 | 46 |
| September | 36.7°C11 Sep 1931 | -8.3°C30 Sep 1939 | 84 mm21 Sep 2021 | 171 mm2023 · driest 8 mm in 2024 | 40 |
| October | 30.0°C5 Oct 2025 | -16.1°C23 Oct 1936 | 104 mm4 Oct 2005 | 228 mm2005 · driest 0 mm in 2013 | 46 |
| November | 24.4°C7 Nov 2020 | -23.9°C21 Nov 2014 | 54 mm30 Nov 2025 | 115 mm2000 · driest 4 mm in 2013 | 36 |
| December | 13.3°C16 Dec 2021 | -40.6°C31 Dec 1946 | 47 mm2 Dec 2019 | 105 mm2019 · driest 2 mm in 1999 | 42 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | <1 | 8 |
| February | 0 | 0 | 27 | <1 | 6 |
| March | <1 | 0 | 28 | 1 | 4 |
| April | <1 | 0 | 22 | 2 | 2 |
| May | 5 | 1 | 7 | 3 | <1 |
| June | 12 | 2 | <1 | 3 | 0 |
| July | 21 | 5 | 0 | 3 | 0 |
| August | 14 | 2 | 0 | 3 | 0 |
| September | 6 | <1 | 3 | 3 | 0 |
| October | <1 | 0 | 14 | 3 | <1 |
| November | 0 | 0 | 25 | 1 | 4 |
| December | 0 | 0 | 30 | 1 | 7 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 21% | 2% | 16% | -9.2–-2.6°C |
| February | 0% | 17% | 2% | 10% | -7.1–0.7°C |
| March | 1% | 19% | 5% | 16% | -0.1–7.5°C |
| April | 9% | 25% | 7% | 27% | 6.8–14.4°C |
| May | 36% | 30% | 9% | 36% | 16.5–21.4°C |
| June | 59% | 32% | 11% | 38% | 21.6–25.8°C |
| July | 74% | 27% | 11% | 27% | 24.7–28.5°C |
| August | 69% | 27% | 10% | 30% | 22.8–27.1°C |
| September | 42% | 29% | 10% | 32% | 17.8–22.6°C |
| October | 13% | 26% | 7% | 27% | 10.0–15.7°C |
| November | 1% | 23% | 6% | 23% | 0.7–7.7°C |
| December | 0% | 22% | 3% | 17% | -7.1–0.5°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