September
September · June · May
United States · 1991–2020
September leads for comfortable weather in Georgetown: typically 25.2°C by day, 12.2°C at night, with 82 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · May
July · August · June
October · May · September
The weakest month is January, scoring 5 against September’s 81 — days reach only 0.5°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 | 0.5°C | -7.9°C | 66 mm | 8.2 | 9 h 33 | 5 | Strong coverage |
| February | 2.7°C | -6.5°C | 52 mm | 7.2 | 10 h 35 | 5 | Strong coverage |
| March | 8.9°C | -1.6°C | 68 mm | 8.2 | 11 h 49 | 11 | Strong coverage |
| April | 16.1°C | 3.9°C | 95 mm | 9.6 | 13 h 14 | 40 | Strong coverage |
| May | 22.2°C | 10.1°C | 110 mm | 10.8 | 14 h 26 | 68 | Strong coverage |
| June | 27.3°C | 15.5°C | 121 mm | 9.3 | 15 h 05 | 70 | Strong coverage |
| July | 29°C | 17.4°C | 121 mm | 8.3 | 14 h 49 | 62 | Strong coverage |
| August | 28.3°C | 16.5°C | 111 mm | 7.8 | 13 h 47 | 68 | Strong coverage |
| September | 25.2°C | 12.2°C | 82 mm | 6.8 | 12 h 25 | 81 | Strong coverage |
| October | 17.7°C | 5.8°C | 77 mm | 7.9 | 11 h 03 | 53 | Strong coverage |
| November | 9.9°C | 0.2°C | 80 mm | 8.3 | 9 h 51 | 16 | Strong coverage |
| December | 3.4°C | -4.7°C | 64 mm | 8.3 | 9 h 16 | 5 | Strong coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 20.6°C24 Jan 1909 | -29.4°C19 Jan 1994 | 68 mm31 Jan 1916 | 181 mm1913 · driest 20 mm in 2009 | 62 |
| February | 22.2°C26 Feb 2000 | -28.3°C14 Feb 1905 | 62 mm21 Feb 2018 | 153 mm1909 · driest 6 mm in 1996 | 61 |
| March | 30.6°C29 Mar 1905 | -18.9°C6 Mar 2015 | 58 mm24 Mar 1913 | 161 mm1913 · driest 9 mm in 1910 | 63 |
| April | 32.8°C27 Apr 1915 | -9.4°C1 Apr 1899 | 112 mm27 Apr 2015 | 208 mm2013 · driest 8 mm in 1913 | 62 |
| May | 38.3°C28 May 1911 | -2.2°C9 May 2020 | 84 mm16 May 2009 | 184 mm2004 · driest 27 mm in 2023 | 63 |
| June | 39.4°C11 Jun 1911 | -1.1°C23 Jun 1918 | 73 mm11 Jun 2004 | 296 mm2015 · driest 23 mm in 1991 | 63 |
| July | 41.1°C5 Jul 1911 | 4.4°C3 Jul 1907 | 198 mm5 Jul 2003 | 444 mm2003 · driest 1 mm in 1893 | 62 |
| August | 40.6°C6 Aug 1918 | 5.0°C31 Aug 1915 | 86 mm18 Aug 1990 | 227 mm1990 · driest 14 mm in 1893 | 61 |
| September | 38.9°C3 Sep 1913 | -1.7°C23 Sep 1995 | 114 mm30 Sep 1906 | 210 mm2003 · driest 5 mm in 1998 | 62 |
| October | 33.3°C8 Oct 1916 | -7.8°C30 Oct 1895 | 70 mm7 Oct 1900 | 210 mm2021 · driest 2 mm in 2024 | 61 |
| November | 26.7°C8 Nov 1915 | -16.1°C26 Nov 1898 | 57 mm22 Nov 2007 | 182 mm2011 · driest 3 mm in 1904 | 61 |
| December | 20.6°C7 Dec 1998 | -26.1°C15 Dec 1917 | 57 mm30 Dec 1990 | 146 mm1990 · driest 13 mm in 1900 | 59 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 27 | 2 | 5 |
| February | 0 | 0 | 25 | 1 | 5 |
| March | <1 | 0 | 20 | 2 | 2 |
| April | 2 | 0 | 7 | 3 | <1 |
| May | 11 | 3 | <1 | 4 | 0 |
| June | 23 | 9 | 0 | 4 | 0 |
| July | 28 | 13 | 0 | 4 | 0 |
| August | 27 | 10 | 0 | 4 | 0 |
| September | 16 | 5 | <1 | 3 | 0 |
| October | 4 | <1 | 3 | 3 | 0 |
| November | <1 | 0 | 16 | 3 | <1 |
| December | 0 | 0 | 25 | 2 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 27% | 6% | 29% | -2.9–4.8°C |
| February | <1% | 25% | 5% | 26% | -2.1–6.1°C |
| March | 6% | 28% | 8% | 33% | 5.9–13.1°C |
| April | 22% | 33% | 11% | 42% | 13.9–18.9°C |
| May | 48% | 34% | 12% | 42% | 19.8–25.8°C |
| June | 69% | 30% | 12% | 34% | 25.6–29.7°C |
| July | 74% | 26% | 10% | 26% | 27.4–32.4°C |
| August | 77% | 24% | 10% | 22% | 27.4–31.6°C |
| September | 69% | 23% | 9% | 23% | 23.1–27.5°C |
| October | 34% | 24% | 8% | 25% | 15.9–21.1°C |
| November | 7% | 27% | 9% | 30% | 7.2–12.8°C |
| December | 0% | 27% | 6% | 29% | 0.7–6.3°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