May
May · October · April
United States · 1991–2020
May leads for comfortable weather in Arrowhead Beach: typically 26.4°C by day, 14.9°C at night, with 94 mm of rain. Based on measured 1991–2020 NOAA station history.
May · October · April
June · August · September
April · October · November
The weakest month is January, scoring 21 against May’s 79 — days reach only 11.5°C, 12° below the 24°C the score treats as ideal, and nights drop to 1°C.
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 | 11.5°C | 1°C | 91 mm | 8.3 | 9 h 56 | 21 | Strong coverage |
| February | 13.5°C | 1.8°C | 81 mm | 7.6 | 10 h 48 | 31 | Strong coverage |
| March | 17.4°C | 5°C | 104 mm | 8.2 | 11 h 51 | 46 | Strong coverage |
| April | 22.4°C | 9.9°C | 82 mm | 7.7 | 13 h 04 | 75 | Strong coverage |
| May | 26.4°C | 14.9°C | 94 mm | 8.3 | 14 h 04 | 79 | Strong coverage |
| June | 30.1°C | 19.6°C | 123 mm | 7.8 | 14 h 37 | 55 | Strong coverage |
| July | 31.7°C | 21.9°C | 152 mm | 9.7 | 14 h 24 | 40 | Strong coverage |
| August | 30.5°C | 21°C | 150 mm | 8.9 | 13 h 32 | 46 | Strong coverage |
| September | 27.6°C | 18°C | 143 mm | 7.5 | 12 h 22 | 64 | Strong coverage |
| October | 22.7°C | 11.9°C | 97 mm | 5.7 | 11 h 12 | 79 | Strong coverage |
| November | 17.2°C | 6.3°C | 82 mm | 6.6 | 10 h 12 | 52 | Strong coverage |
| December | 13.1°C | 2.8°C | 82 mm | 7 | 9 h 42 | 32 | 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 | 26.7°C25 Jan 1937 | -20.0°C21 Jan 1985 | 89 mm31 Jan 1960 | 233 mm1987 · driest 9 mm in 2004 | 130 |
| February | 28.3°C28 Feb 1962 | -17.8°C12 Feb 1912 | 94 mm20 Feb 1905 | 250 mm1922 · driest 18 mm in 1947 | 130 |
| March | 32.2°C17 Mar 1945 | -9.4°C4 Mar 1943 | 116 mm2 Mar 1994 | 207 mm2024 · driest 18 mm in 1945 | 130 |
| April | 35.0°C25 Apr 1925 | -6.1°C1 Apr 1923 | 132 mm27 Apr 1960 | 208 mm1905 · driest 13 mm in 1904 | 130 |
| May | 36.7°C23 May 1941 | 1.7°C11 May 1947 | 93 mm24 May 1977 | 256 mm1921 · driest 6 mm in 1920 | 131 |
| June | 38.9°C9 Jun 1933 | 7.2°C7 Jun 1921 | 136 mm21 Jun 1983 | 327 mm1949 · driest 21 mm in 2008 | 130 |
| July | 40.6°C18 Jul 1942 | 8.3°C22 Jul 1966 | 168 mm28 Jul 1965 | 411 mm1906 · driest 16 mm in 1953 | 129 |
| August | 40.0°C3 Aug 1942 | 7.8°C25 Aug 1952 | 275 mm27 Aug 2011 | 359 mm2011 · driest 10 mm in 1912 | 128 |
| September | 37.2°C18 Sep 1991 | 3.3°C15 Sep 1919 | 197 mm18 Sep 2003 | 480 mm1999 · driest 5 mm in 1978 | 129 |
| October | 35.0°C8 Oct 1941 | -4.4°C29 Oct 1952 | 216 mm9 Oct 2016 | 313 mm2016 · driest 0 mm in 2000 | 130 |
| November | 31.1°C6 Nov 1938 | -8.9°C17 Nov 1933 | 128 mm3 Nov 1947 | 289 mm1947 · driest 9 mm in 1931 | 129 |
| December | 30.6°C3 Dec 1922 | -15.0°C30 Dec 1917 | 109 mm18 Dec 2023 | 226 mm2009 · driest 9 mm in 1985 | 130 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | <1 | 0 | 15 | 3 | <1 |
| February | <1 | 0 | 11 | 2 | <1 |
| March | 3 | <1 | 6 | 4 | 0 |
| April | 10 | 2 | <1 | 3 | 0 |
| May | 21 | 7 | 0 | 3 | 0 |
| June | 28 | 18 | 0 | 4 | 0 |
| July | 31 | 24 | 0 | 5 | 0 |
| August | 30 | 19 | 0 | 5 | 0 |
| September | 25 | 7 | 0 | 4 | 0 |
| October | 10 | <1 | <1 | 2 | 0 |
| November | 1 | 0 | 4 | 3 | 0 |
| December | <1 | 0 | 11 | 3 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 6% | 27% | 11% | 27% | 8.6–14.3°C |
| February | 10% | 28% | 12% | 30% | 9.4–15.6°C |
| March | 28% | 25% | 12% | 23% | 14.3–19.9°C |
| April | 56% | 23% | 10% | 21% | 20.3–24.4°C |
| May | 71% | 26% | 12% | 28% | 24.6–28.1°C |
| June | 74% | 26% | 14% | 26% | 28.1–32.1°C |
| July | 69% | 31% | 17% | 38% | 29.9–32.9°C |
| August | 72% | 28% | 15% | 29% | 29.0–32.4°C |
| September | 78% | 21% | 11% | 19% | 26.1–29.7°C |
| October | 64% | 17% | 8% | 13% | 20.9–24.0°C |
| November | 28% | 20% | 9% | 16% | 14.7–19.6°C |
| December | 7% | 23% | 10% | 21% | 9.9–15.5°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