May
May · September · October
United States · 1991–2020
May leads for comfortable weather in Tonalea: typically 26.9°C by day, 9°C at night, with 11 mm of rain. Based on measured 1991–2020 NOAA station history.
May · September · October
August · September · July
April · October · May
The weakest month is December, scoring 10 against May’s 80 — days reach only 7.6°C, 16° below the 24°C the score treats as ideal, and nights drop to -5.1°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 | 8.5°C | -4.8°C | 15 mm | 2.5 | 9 h 56 | 13 | Good coverage |
| February | 11.9°C | -2.6°C | 12 mm | 2.7 | 10 h 48 | 29 | Good coverage |
| March | 16.9°C | 1°C | 14 mm | 2.9 | 11 h 51 | 51 | Good coverage |
| April | 21°C | 3.8°C | 5 mm | 1.1 | 13 h 04 | 70 | Good coverage |
| May | 26.9°C | 9°C | 11 mm | 1.8 | 14 h 04 | 80 | Good coverage |
| June | 32.4°C | 13.4°C | 3 mm | 0.7 | 14 h 37 | 69 | Good coverage |
| July | 34.7°C | 17.6°C | 17 mm | 2.8 | 14 h 24 | 60 | Good coverage |
| August | 33.4°C | 16.7°C | 22 mm | 4.4 | 13 h 32 | 65 | Good coverage |
| September | 29.2°C | 12.2°C | 29 mm | 3.2 | 12 h 22 | 77 | Good coverage |
| October | 22.4°C | 5.4°C | 17 mm | 2.5 | 11 h 12 | 77 | Good coverage |
| November | 14.3°C | -0.8°C | 10 mm | 1.5 | 10 h 11 | 39 | Good coverage |
| December | 7.6°C | -5.1°C | 9 mm | 2 | 9 h 42 | 10 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 19.4°C31 Jan 1954 | -26.1°C7 Jan 1913 | 48 mm7 Jan 1936 | 91 mm1993 · driest 0 mm in 1972 | 99 |
| February | 24.4°C24 Feb 1904 | -22.2°C18 Feb 1975 | 26 mm8 Feb 1965 | 52 mm1913 · driest 0 mm in 1975 | 101 |
| March | 28.9°C19 Mar 1907 | -15.0°C31 Mar 1975 | 35 mm1 Mar 1993 | 68 mm1941 · driest 0 mm in 1956 | 100 |
| April | 34.4°C23 Apr 1958 | -10.0°C6 Apr 1921 | 32 mm17 Apr 1988 | 66 mm1905 · driest 0 mm in 2009 | 96 |
| May | 37.8°C27 May 1951 | -11.1°C8 May 1975 | 42 mm23 May 2007 | 71 mm1992 · driest 0 mm in 1927 | 98 |
| June | 43.3°C20 Jun 1940 | -1.7°C14 Jun 2009 | 31 mm12 Jun 1927 | 91 mm1927 · driest 0 mm in 1975 | 99 |
| July | 43.3°C15 Jul 1940 | 2.8°C22 Jul 1974 | 38 mm29 Jul 2012 | 112 mm1914 · driest 0 mm in 1899 | 96 |
| August | 42.2°C2 Aug 1902 | 0.6°C23 Aug 2009 | 27 mm12 Aug 1943 | 58 mm1947 · driest 0 mm in 1940 | 95 |
| September | 39.4°C3 Sep 1948 | -6.7°C27 Sep 1974 | 86 mm27 Sep 1926 | 117 mm1926 · driest 0 mm in 1953 | 96 |
| October | 35.0°C1 Oct 1899 | -11.7°C29 Oct 1974 | 51 mm5 Oct 1925 | 195 mm1972 · driest 0 mm in 1937 | 93 |
| November | 27.2°C5 Nov 1898 | -20.0°C24 Nov 1931 | 28 mm23 Nov 1922 | 74 mm1906 · driest 0 mm in 1916 | 95 |
| December | 21.7°C5 Dec 1958 | -26.1°C12 Dec 1898 | 33 mm25 Dec 1942 | 57 mm1906 · driest 0 mm in 1975 | 97 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 27 | <1 | <1 |
| February | 0 | 0 | 21 | <1 | <1 |
| March | 1 | 0 | 13 | <1 | <1 |
| April | 7 | <1 | 5 | <1 | <1 |
| May | 21 | 8 | <1 | <1 | 0 |
| June | 28 | 23 | <1 | 0 | 0 |
| July | 29 | 27 | 0 | <1 | 0 |
| August | 29 | 27 | 0 | <1 | 0 |
| September | 26 | 14 | 0 | <1 | 0 |
| October | 10 | 1 | 3 | <1 | 0 |
| November | 0 | 0 | 18 | <1 | <1 |
| December | 0 | 0 | 27 | 0 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 7% | 1% | 3% | 3.3–10.8°C |
| February | 3% | 8% | 1% | 4% | 8.2–14.7°C |
| March | 27% | 8% | <1% | 4% | 12.9–19.2°C |
| April | 62% | 6% | <1% | 3% | 18.0–23.6°C |
| May | 87% | 5% | <1% | 2% | 24.0–29.0°C |
| June | 96% | 3% | <1% | <1% | 29.8–34.7°C |
| July | 88% | 11% | 2% | 7% | 32.8–36.7°C |
| August | 86% | 13% | 2% | 6% | 31.4–35.2°C |
| September | 89% | 9% | 2% | 5% | 27.4–31.6°C |
| October | 72% | 8% | 2% | 4% | 20.2–25.7°C |
| November | 15% | 6% | <1% | 2% | 11.7–17.5°C |
| December | <1% | 8% | <1% | 4% | 4.3–11.0°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