September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Cleveland: typically 23.7°C by day, 15.9°C at night, with 78 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · August
July · August · June
May · October · September
The weakest month is January, scoring 5 against September’s 87 — days reach only 2.1°C, 22° 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 | 2.1°C | -4.8°C | 42 mm | 6.9 | 2.0°C | 9 h 29 | 5 | Good coverage |
| February | 3.4°C | -3.9°C | 39 mm | 6.1 | 0.8°C | 10 h 32 | 5 | Good coverage |
| March | 7.7°C | -0.2°C | 57 mm | 8 | 1.4°C | 11 h 48 | 11 | Good coverage |
| April | 14.4°C | 5.5°C | 78 mm | 10.5 | 4.6°C | 13 h 16 | 38 | Good coverage |
| May | 20.6°C | 11.9°C | 91 mm | 10.7 | 10.7°C | 14 h 29 | 68 | Good coverage |
| June | 25.4°C | 17.5°C | 73 mm | 8.5 | 18.1°C | 15 h 10 | 80 | Good coverage |
| July | 27.5°C | 20.2°C | 79 mm | 7.7 | 22.9°C | 14 h 54 | 69 | Good coverage |
| August | 26.8°C | 19.6°C | 89 mm | 7.9 | 23.7°C | 13 h 50 | 70 | Good coverage |
| September | 23.7°C | 15.9°C | 78 mm | 7.7 | 21.4°C | 12 h 25 | 87 | Good coverage |
| October | 17.2°C | 9.7°C | 80 mm | 9.7 | 16.4°C | 11 h 01 | 56 | Good coverage |
| November | 11.1°C | 4°C | 62 mm | 8 | 10.6°C | 9 h 47 | 29 | Good coverage |
| December | 4.9°C | -1.1°C | 54 mm | 8.5 | 5.7°C | 9 h 11 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 22.8°C13 Jan 2005 | -23.2°C7 Jan 2014 | 35 mm5 Jan 2007 | 107 mm2023 · driest 11 mm in 2003 | 28 |
| February | 25.0°C24 Feb 2017 | -24.9°C23 Feb 2015 | 49 mm28 Feb 2011 | 121 mm2008 · driest 3 mm in 2024 | 29 |
| March | 27.8°C26 Mar 2007 | -16.1°C3 Mar 2003 | 42 mm31 Mar 2026 | 123 mm2026 · driest 17 mm in 2005 | 29 |
| April | 30.0°C16 Apr 2002 | -3.8°C7 Apr 2007 | 60 mm15 Apr 2018 | 150 mm1998 · driest 28 mm in 2012 | 29 |
| May | 34.4°C28 May 2012 | 1.7°C9 May 2020 | 43 mm31 May 2003 | 169 mm2003 · driest 16 mm in 2007 | 29 |
| June | 37.2°C14 Jun 2005 | 6.7°C2 Jun 2003 | 69 mm27 Jun 2015 | 218 mm2015 · driest 2 mm in 2016 | 29 |
| July | 37.2°C10 Jul 2007 | 11.7°C8 Jul 2000 | 58 mm21 Jul 2003 | 156 mm2006 · driest 13 mm in 2015 | 29 |
| August | 35.6°C27 Aug 2024 | 11.7°C30 Aug 2025 | 81 mm2 Aug 2007 | 261 mm2007 · driest 28 mm in 2003 | 28 |
| September | 36.1°C10 Sep 2013 | 5.0°C29 Sep 2000 | 58 mm22 Sep 2021 | 177 mm2003 · driest 15 mm in 2023 | 28 |
| October | 31.7°C1 Oct 2019 | 0.0°C23 Oct 2006 | 51 mm21 Oct 2020 | 163 mm2020 · driest 38 mm in 1998 | 27 |
| November | 26.7°C5 Nov 2024 | -11.0°C18 Nov 2014 | 54 mm2 Nov 1999 | 101 mm2018 · driest 5 mm in 2023 | 27 |
| December | 22.2°C5 Dec 2001 | -18.8°C23 Dec 2022 | 49 mm21 Dec 2013 | 95 mm2024 · driest 13 mm in 2010 | 28 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 25 | 1 |
| February | 0 | 0 | 22 | 1 |
| March | <1 | 0 | 18 | 2 |
| April | 2 | <1 | 2 | 3 |
| May | 9 | 3 | 0 | 3 |
| June | 17 | 6 | 0 | 2 |
| July | 24 | 8 | 0 | 3 |
| August | 23 | 5 | 0 | 3 |
| September | 12 | 3 | 0 | 3 |
| October | 3 | <1 | 0 | 3 |
| November | <1 | 0 | 6 | 2 |
| December | 0 | 0 | 19 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 22% | 4% | 18% | -1.3–5.8°C |
| February | <1% | 21% | 4% | 18% | -0.6–7.2°C |
| March | 7% | 27% | 5% | 32% | 4.2–12.6°C |
| April | 16% | 36% | 9% | 49% | 12.8–17.1°C |
| May | 34% | 34% | 11% | 38% | 18.3–23.3°C |
| June | 64% | 28% | 7% | 33% | 23.7–27.3°C |
| July | 75% | 25% | 9% | 27% | 26.1–29.1°C |
| August | 74% | 26% | 10% | 26% | 25.6–28.2°C |
| September | 66% | 25% | 8% | 27% | 21.9–25.4°C |
| October | 26% | 31% | 9% | 37% | 15.4–20.0°C |
| November | 6% | 26% | 5% | 31% | 8.2–14.0°C |
| December | <1% | 27% | 5% | 31% | 1.6–8.3°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