August
August · July · September
United States · 1991–2020
August leads for comfortable weather in Glasgow: typically 19.6°C by day, 11.8°C at night, with 11 mm of rain. Based on measured 1991–2020 NOAA station history.
August · July · September
August · July · September
August · September · July
The weakest month is January, scoring 5 against August’s 80 — days reach only 12°C, 12° below the 24°C the score treats as ideal, and 232 mm of rain falls.
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 | 12°C | 4.8°C | 232 mm | 17.3 | 10.4°C | 9 h 17 | 5 | Strong coverage |
| February | 12.4°C | 4.7°C | 178 mm | 15.3 | 10.3°C | 10 h 26 | 12 | Strong coverage |
| March | 12.9°C | 5.2°C | 185 mm | 16.7 | 10.4°C | 11 h 47 | 12 | Strong coverage |
| April | 13.8°C | 6.4°C | 135 mm | 14.7 | 10.9°C | 13 h 21 | 26 | Strong coverage |
| May | 15.9°C | 8.7°C | 77 mm | 10.2 | 11.8°C | 14 h 40 | 49 | Strong coverage |
| June | 17.5°C | 10.5°C | 40 mm | 6.5 | 12.7°C | 15 h 23 | 67 | Strong coverage |
| July | 19°C | 11.8°C | 9 mm | 1.9 | 12.8°C | 15 h 06 | 78 | Strong coverage |
| August | 19.6°C | 11.8°C | 11 mm | 1.9 | 13.2°C | 13 h 58 | 80 | Strong coverage |
| September | 19.3°C | 10.4°C | 38 mm | 4.3 | 13.3°C | 12 h 27 | 75 | Strong coverage |
| October | 17.2°C | 8.1°C | 109 mm | 10.5 | 12.5°C | 10 h 56 | 48 | Strong coverage |
| November | 13.9°C | 6.1°C | 210 mm | 16.8 | 11.8°C | 9 h 37 | 14 | Strong coverage |
| December | 11.7°C | 4.5°C | 268 mm | 18 | 10.9°C | 8 h 58 | 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 | 23.3°C29 Jan 1940 | -8.9°C11 Jan 1930 | 112 mm24 Jan 1903 | 557 mm1950 · driest 25 mm in 1985 | 125 |
| February | 27.8°C25 Feb 1992 | -10.0°C5 Feb 1989 | 131 mm3 Feb 1937 | 466 mm1904 · driest 14 mm in 1920 | 125 |
| March | 30.0°C28 Mar 1930 | -7.8°C27 Mar 1908 | 102 mm16 Mar 1938 | 502 mm1904 · driest 30 mm in 1926 | 124 |
| April | 31.1°C13 Apr 1947 | -2.8°C16 Apr 1908 | 81 mm7 Apr 2019 | 283 mm1993 · driest 11 mm in 1956 | 124 |
| May | 34.4°C13 May 1939 | -3.3°C30 May 1912 | 111 mm20 May 1998 | 237 mm1998 · driest 0 mm in 2018 | 123 |
| June | 37.8°C24 Jun 1925 | 0.6°C9 Jun 2008 | 69 mm6 Jun 1985 | 145 mm1947 · driest 2 mm in 1918 | 124 |
| July | 36.7°C8 Jul 1905 | 1.7°C15 Jul 1920 | 33 mm1 Jul 1983 | 71 mm1983 · driest 0 mm in 2018 | 124 |
| August | 35.6°C31 Aug 1918 | 1.7°C13 Aug 1904 | 41 mm19 Aug 2007 | 140 mm1968 · driest 0 mm in 2005 | 123 |
| September | 34.4°C10 Sep 1922 | -1.1°C25 Sep 1908 | 61 mm18 Sep 2004 | 247 mm1914 · driest 0 mm in 2015 | 124 |
| October | 35.0°C10 Oct 1991 | -3.3°C13 Oct 1930 | 101 mm9 Oct 1955 | 356 mm2016 · driest 1 mm in 1917 | 123 |
| November | 25.6°C1 Nov 1926 | -6.7°C15 Nov 1955 | 169 mm18 Nov 1996 | 576 mm1973 · driest 17 mm in 1936 | 124 |
| December | 21.1°C15 Dec 1980 | -10.6°C21 Dec 1990 | 142 mm5 Dec 1981 | 568 mm1955 · driest 43 mm in 1989 | 124 |
| Month | Days 25°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|
| January | 0 | 3 | 8 |
| February | <1 | 2 | 6 |
| March | 0 | <1 | 6 |
| April | <1 | <1 | 4 |
| May | <1 | 0 | 2 |
| June | <1 | 0 | 1 |
| July | <1 | 0 | <1 |
| August | <1 | 0 | <1 |
| September | 1 | 0 | 1 |
| October | <1 | 0 | 4 |
| November | 0 | 1 | 7 |
| December | 0 | 3 | 9 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 58% | 28% | 75% | 9.3–13.3°C |
| February | 2% | 56% | 25% | 74% | 10.2–14.6°C |
| March | 3% | 55% | 22% | 73% | 10.9–14.6°C |
| April | 5% | 45% | 14% | 60% | 12.5–15.9°C |
| May | 7% | 33% | 8% | 40% | 14.5–17.6°C |
| June | 15% | 21% | 4% | 22% | 16.6–19.4°C |
| July | 35% | 7% | <1% | 4% | 18.0–20.6°C |
| August | 49% | 8% | 1% | 7% | 18.4–21.5°C |
| September | 37% | 18% | 5% | 21% | 18.1–21.2°C |
| October | 17% | 34% | 13% | 48% | 16.0–18.8°C |
| November | 3% | 55% | 26% | 74% | 12.5–15.7°C |
| December | <1% | 58% | 29% | 77% | 9.9–13.3°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