August
August · July · June
United States · 1991–2020
August leads for comfortable weather in Granton: typically 25.8°C by day, 12.5°C at night, with 107 mm of rain. Based on measured 1991–2020 NOAA station history.
August · July · June
July · August · June
September · May · August
The weakest month is January, scoring 5 against August’s 74 — days reach only -4.5°C, 28° 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 | -4.5°C | -15.2°C | 28 mm | 6.2 | 9 h 10 | 5 | Strong coverage |
| February | -1.5°C | -13.3°C | 27 mm | 5.2 | 10 h 21 | 5 | Strong coverage |
| March | 5.2°C | -7.1°C | 41 mm | 6.5 | 11 h 46 | 5 | Strong coverage |
| April | 13°C | -0.4°C | 83 mm | 8.9 | 13 h 24 | 24 | Strong coverage |
| May | 20°C | 6°C | 110 mm | 10.8 | 14 h 47 | 53 | Strong coverage |
| June | 24.8°C | 11.4°C | 132 mm | 11.2 | 15 h 32 | 70 | Strong coverage |
| July | 27°C | 13.6°C | 101 mm | 8.8 | 15 h 14 | 73 | Strong coverage |
| August | 25.8°C | 12.5°C | 107 mm | 8.9 | 14 h 03 | 74 | Strong coverage |
| September | 21.6°C | 7.9°C | 105 mm | 8.6 | 12 h 28 | 65 | Strong coverage |
| October | 14.3°C | 1.7°C | 76 mm | 8 | 10 h 54 | 34 | Strong coverage |
| November | 5.6°C | -4.6°C | 46 mm | 5.9 | 9 h 31 | 5 | Strong coverage |
| December | -1.6°C | -11.1°C | 36 mm | 6.3 | 8 h 50 | 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 | 13.9°C25 Jan 1944 | -44.4°C30 Jan 1951 | 45 mm28 Jan 1914 | 70 mm1996 · driest 0 mm in 1981 | 132 |
| February | 16.7°C20 Feb 2017 | -43.3°C10 Feb 1899 | 45 mm22 Feb 1922 | 92 mm2019 · driest 0 mm in 1987 | 130 |
| March | 28.3°C29 Mar 1986 | -39.4°C1 Mar 1962 | 55 mm26 Mar 1906 | 111 mm1913 · driest 0 mm in 1910 | 131 |
| April | 32.8°C16 Apr 2002 | -16.7°C15 Apr 1928 | 62 mm14 Apr 2026 | 223 mm2026 · driest 15 mm in 1944 | 132 |
| May | 40.6°C31 May 1934 | -9.4°C4 May 1976 | 79 mm16 May 1894 | 254 mm2004 · driest 16 mm in 1992 | 132 |
| June | 40.0°C29 Jun 1910 | -5.6°C4 Jun 1998 | 123 mm27 Jun 1986 | 289 mm1930 · driest 13 mm in 1910 | 133 |
| July | 41.1°C13 Jul 1936 | 1.1°C11 Jul 1898 | 111 mm1 Jul 1978 | 301 mm1999 · driest 10 mm in 1894 | 132 |
| August | 39.4°C25 Aug 1948 | -0.6°C30 Aug 1915 | 127 mm8 Aug 1980 | 320 mm1980 · driest 6 mm in 1894 | 132 |
| September | 36.7°C2 Sep 1937 | -10.0°C30 Sep 1899 | 105 mm22 Sep 2016 | 282 mm2010 · driest 14 mm in 1897 | 130 |
| October | 33.3°C1 Oct 1976 | -15.6°C30 Oct 1925 | 97 mm27 Oct 1900 | 214 mm1911 · driest 3 mm in 1953 | 129 |
| November | 27.2°C1 Nov 1950 | -26.7°C25 Nov 1950 | 58 mm10 Nov 1975 | 139 mm1934 · driest 0 mm in 1976 | 131 |
| December | 17.8°C6 Dec 2001 | -37.8°C24 Dec 1951 | 39 mm10 Dec 1911 | 107 mm1893 · driest 0 mm in 1896 | 131 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | <1 | 6 |
| February | 0 | 0 | 27 | <1 | 5 |
| March | <1 | 0 | 27 | 1 | 3 |
| April | 1 | <1 | 17 | 3 | 2 |
| May | 6 | 1 | 4 | 4 | 0 |
| June | 17 | 3 | <1 | 4 | 0 |
| July | 23 | 6 | 0 | 3 | 0 |
| August | 19 | 4 | 0 | 3 | 0 |
| September | 9 | 1 | 2 | 3 | 0 |
| October | 2 | 0 | 13 | 3 | <1 |
| November | 0 | 0 | 25 | 2 | 2 |
| December | 0 | 0 | 30 | <1 | 6 |
The best month has moved. On the 1961–1990 numbers the strongest month here was June (scoring 79); on 2011–2025 it is August (82). 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% | 16% | 2% | 11% | -9.2–-1.4°C |
| February | 0% | 16% | 3% | 10% | -6.2–1.7°C |
| March | 2% | 19% | 5% | 17% | 0.6–8.4°C |
| April | 15% | 26% | 9% | 30% | 10.3–16.3°C |
| May | 42% | 30% | 11% | 35% | 18.1–23.2°C |
| June | 63% | 32% | 13% | 39% | 23.2–27.8°C |
| July | 74% | 25% | 11% | 24% | 25.7–29.8°C |
| August | 74% | 24% | 11% | 21% | 24.3–28.7°C |
| September | 49% | 27% | 11% | 29% | 19.5–23.8°C |
| October | 21% | 21% | 7% | 18% | 12.0–17.9°C |
| November | 2% | 19% | 5% | 15% | 1.7–8.5°C |
| December | 0% | 18% | 3% | 12% | -6.0–1.2°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