September
September · May · June
United States · 1991–2020
September leads for comfortable weather in Fortescue: typically 25.8°C by day, 13.1°C at night, with 79 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · June
August · July · June
October · September · April
The weakest month is January, scoring 5 against September’s 82 — days reach only 1.3°C, 23° 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 | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 1.3°C | -9.2°C | 11 mm | 1.6 | 9 h 37 | 5 | Good coverage |
| February | 4.4°C | -6.6°C | 30 mm | 2.9 | 10 h 37 | 5 | Good coverage |
| March | 11.3°C | -0.6°C | 65 mm | 5.1 | 11 h 49 | 24 | Good coverage |
| April | 17.4°C | 5.3°C | 107 mm | 8.6 | 13 h 12 | 46 | Good coverage |
| May | 23.4°C | 11.8°C | 156 mm | 9.8 | 14 h 22 | 69 | Strong coverage |
| June | 28.3°C | 17.1°C | 128 mm | 8.1 | 15 h | 64 | Good coverage |
| July | 30.4°C | 19.5°C | 123 mm | 7.3 | 14 h 45 | 54 | Good coverage |
| August | 29.8°C | 18.3°C | 105 mm | 6 | 13 h 45 | 63 | Good coverage |
| September | 25.8°C | 13.1°C | 79 mm | 5.5 | 12 h 24 | 82 | Good coverage |
| October | 19.1°C | 6.6°C | 88 mm | 6.1 | 11 h 04 | 58 | Good coverage |
| November | 11°C | -0.1°C | 41 mm | 3.1 | 9 h 54 | 29 | Strong coverage |
| December | 3.6°C | -6.1°C | 28 mm | 2.6 | 9 h 20 | 5 | Good 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 | 22.2°C29 Jan 2015 | -31.7°C12 Jan 1912 | 41 mm9 Jan 1929 | 98 mm1949 · driest 0 mm in 2012 | 114 |
| February | 28.9°C24 Feb 1930 | -32.8°C13 Feb 1905 | 68 mm18 Feb 1911 | 111 mm1911 · driest 0 mm in 1996 | 116 |
| March | 32.8°C29 Mar 1895 | -24.4°C4 Mar 1978 | 59 mm23 Mar 2009 | 188 mm1973 · driest 0 mm in 1910 | 116 |
| April | 35.0°C20 Apr 1902 | -12.8°C3 Apr 1975 | 89 mm27 Apr 2016 | 201 mm1944 · driest 15 mm in 2018 | 116 |
| May | 40.0°C30 May 1934 | -3.9°C1 May 1909 | 122 mm29 May 2019 | 387 mm2019 · driest 29 mm in 1914 | 115 |
| June | 40.6°C25 Jun 1937 | 4.4°C7 Jun 1935 | 158 mm24 Jun 2000 | 316 mm1967 · driest 7 mm in 1911 | 117 |
| July | 44.4°C15 Jul 1934 | 6.7°C30 Jul 1971 | 178 mm16 Jul 1900 | 544 mm1993 · driest 4 mm in 2019 | 116 |
| August | 44.4°C13 Aug 1936 | 5.0°C30 Aug 1915 | 121 mm8 Aug 1973 | 290 mm1954 · driest 1 mm in 1894 | 117 |
| September | 42.2°C3 Sep 1947 | -1.7°C27 Sep 1942 | 169 mm26 Sep 1933 | 306 mm1905 · driest 8 mm in 1895 | 116 |
| October | 35.6°C4 Oct 1938 | -16.1°C30 Oct 1925 | 131 mm11 Oct 1973 | 216 mm1941 · driest 0 mm in 1952 | 116 |
| November | 28.3°C10 Nov 1927 | -20.0°C28 Nov 1976 | 77 mm9 Nov 1919 | 213 mm1931 · driest 0 mm in 1917 | 114 |
| December | 22.2°C6 Dec 1939 | -28.3°C10 Dec 1919 | 66 mm8 Dec 1980 | 99 mm1944 · driest 0 mm in 2002 | 114 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 29 | <1 | <1 |
| February | 0 | 0 | 23 | <1 | <1 |
| March | 1 | 0 | 18 | 2 | <1 |
| April | 5 | 1 | 5 | 4 | <1 |
| May | 13 | 4 | <1 | 4 | 0 |
| June | 24 | 12 | 0 | 4 | 0 |
| July | 28 | 17 | 0 | 4 | 0 |
| August | 28 | 15 | 0 | 3 | 0 |
| September | 18 | 7 | <1 | 3 | 0 |
| October | 7 | 1 | 4 | 3 | 0 |
| November | <1 | 0 | 15 | 1 | <1 |
| December | 0 | 0 | 26 | 1 | <1 |
The best month has moved. On the 1961–1990 numbers the strongest month here was May (scoring 80); on 2011–2025 it is September (84). 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 | <1% | 12% | 2% | 6% | -2.6–5.9°C |
| February | 2% | 14% | 4% | 8% | 0.0–8.6°C |
| March | 13% | 18% | 7% | 13% | 6.8–15.3°C |
| April | 35% | 27% | 11% | 27% | 15.6–21.2°C |
| May | 56% | 30% | 13% | 33% | 21.2–26.4°C |
| June | 69% | 30% | 14% | 33% | 26.5–30.6°C |
| July | 76% | 24% | 11% | 20% | 29.0–34.2°C |
| August | 77% | 23% | 11% | 21% | 28.1–33.4°C |
| September | 70% | 23% | 11% | 19% | 23.4–28.8°C |
| October | 48% | 18% | 8% | 13% | 17.0–23.1°C |
| November | 11% | 13% | 5% | 8% | 7.9–14.4°C |
| December | <1% | 12% | 3% | 6% | 0.6–7.3°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