June
June · September · August
United States · 1991–2020
June leads for comfortable weather in Milwaukee: typically 24.4°C by day, 14.4°C at night, with 111 mm of rain. Based on measured 1991–2020 NOAA station history.
June · September · August
July · August · June
May · September · October
The weakest month is January, scoring 5 against June’s 82 — days reach only -1.1°C, 25° 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 | -1.1°C | -8.5°C | 45 mm | 7.9 | 3.3°C | 9 h 20 | 5 | Strong coverage |
| February | 0.7°C | -6.9°C | 43 mm | 6.2 | 2.1°C | 10 h 27 | 5 | Strong coverage |
| March | 6.2°C | -2.1°C | 56 mm | 7.6 | 2.0°C | 11 h 47 | 5 | Strong coverage |
| April | 12.1°C | 2.9°C | 98 mm | 9.3 | 3.2°C | 13 h 20 | 25 | Strong coverage |
| May | 18.7°C | 8.5°C | 90 mm | 9.3 | 5.8°C | 14 h 38 | 57 | Strong coverage |
| June | 24.4°C | 14.4°C | 111 mm | 8.8 | 12.3°C | 15 h 21 | 82 | Strong coverage |
| July | 27.2°C | 17.9°C | 86 mm | 7.3 | 19.3°C | 15 h 04 | 73 | Strong coverage |
| August | 26.4°C | 17.6°C | 93 mm | 7.6 | 21.1°C | 13 h 56 | 75 | Strong coverage |
| September | 22.5°C | 13.3°C | 80 mm | 6.7 | 18.8°C | 12 h 26 | 82 | Strong coverage |
| October | 15.8°C | 6.8°C | 70 mm | 7.4 | 13.1°C | 10 h 57 | 49 | Strong coverage |
| November | 8.2°C | 0.3°C | 57 mm | 6.7 | 8.0°C | 9 h 39 | 15 | Strong coverage |
| December | 1.7°C | -5.3°C | 48 mm | 7.1 | 5.1°C | 9 h 01 | 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 | 17.2°C7 Jan 2008 | -32.2°C17 Jan 1982 | 42 mm29 Jan 2013 | 111 mm1999 · driest 4 mm in 2025 | 88 |
| February | 23.3°C27 Feb 2024 | -32.2°C3 Feb 1996 | 52 mm27 Feb 2023 | 109 mm2023 · driest 1 mm in 1969 | 88 |
| March | 28.9°C21 Mar 2012 | -23.3°C1 Mar 1962 | 59 mm4 Mar 1976 | 176 mm1976 · driest 8 mm in 1968 | 88 |
| April | 32.8°C22 Apr 1980 | -11.1°C7 Apr 1982 | 81 mm9 Apr 2015 | 241 mm2026 · driest 21 mm in 1942 | 89 |
| May | 35.0°C27 May 2018 | -6.1°C10 May 1966 | 76 mm17 May 2020 | 214 mm2000 · driest 9 mm in 2026 | 89 |
| June | 38.3°C21 Jun 1988 | 0.6°C4 Jun 1945 | 134 mm22 Jun 1940 | 312 mm2008 · driest 18 mm in 1988 | 89 |
| July | 39.4°C13 Jul 1995 | 4.4°C1 Jul 1965 | 143 mm22 Jul 2010 | 278 mm2010 · driest 17 mm in 1939 | 89 |
| August | 39.4°C1 Aug 1988 | 6.7°C18 Aug 1963 | 173 mm6 Aug 1986 | 230 mm1987 · driest 12 mm in 1948 | 88 |
| September | 36.7°C1 Sep 1953 | -2.2°C28 Sep 1942 | 121 mm11 Sep 2022 | 251 mm1941 · driest 1 mm in 1979 | 88 |
| October | 31.7°C6 Oct 1963 | -7.8°C24 Oct 1981 | 59 mm24 Oct 1991 | 179 mm1991 · driest 4 mm in 1956 | 88 |
| November | 25.0°C1 Nov 1950 | -20.6°C24 Nov 1950 | 56 mm10 Nov 1998 | 181 mm1985 · driest 9 mm in 2012 | 88 |
| December | 20.0°C16 Dec 2021 | -28.9°C24 Dec 1983 | 57 mm2 Dec 1982 | 138 mm1987 · driest 8 mm in 1976 | 88 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 28 | 1 | 10 |
| February | 0 | 0 | 25 | 2 | 8 |
| March | <1 | 0 | 21 | 2 | 5 |
| April | 1 | <1 | 6 | 4 | 2 |
| May | 7 | 1 | <1 | 3 | 0 |
| June | 15 | 5 | 0 | 3 | 0 |
| July | 22 | 9 | 0 | 3 | 0 |
| August | 20 | 6 | 0 | 3 | 0 |
| September | 10 | 2 | 0 | 3 | 0 |
| October | 2 | <1 | 2 | 2 | <1 |
| November | 0 | 0 | 15 | 2 | 3 |
| December | 0 | 0 | 25 | 1 | 7 |
The best month has moved. On the 1961–1990 numbers the strongest month here was June (scoring 89); on 2011–2025 it is September (90). Both are scored the same way, from the same station — only the climate underneath changed.
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 23% | 3% | 25% | -5.5–1.3°C |
| February | 0% | 21% | 4% | 20% | -3.4–4.0°C |
| March | 3% | 26% | 7% | 30% | 2.2–8.9°C |
| April | 10% | 30% | 10% | 36% | 9.7–14.8°C |
| May | 29% | 29% | 9% | 34% | 15.5–21.0°C |
| June | 57% | 29% | 10% | 31% | 22.0–26.5°C |
| July | 74% | 23% | 9% | 22% | 25.0–28.7°C |
| August | 73% | 24% | 9% | 21% | 24.2–28.0°C |
| September | 52% | 22% | 9% | 23% | 20.3–24.2°C |
| October | 20% | 22% | 7% | 24% | 13.0–18.2°C |
| November | 3% | 23% | 6% | 22% | 4.6–10.5°C |
| December | 0% | 24% | 5% | 24% | -2.8–4.1°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