September
September · August · June
75climate match
United States · 1991–2020
Best time to visit
Georgetown.
September leads for comfortable weather in Georgetown: typically 24.9°C by day, 9.6°C at night, with 94 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high24.9°C
Typical low9.6°C
Rain in September94 mm
August
August · July · June
64climate match
October
October · September · May
70climate match
The weakest month is January, scoring 5 against September’s 75 — days reach only -0.7°C, 25° below the 24°C the score treats as ideal.
Month by month
The whole year,
without the guesswork.
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
Jan
5-0.7° / -11.8°
Feb
51.9° / -9.8°
Mar
88.6° / -3.6°
Apr
3415.8° / 2°
May
6422.4° / 8.3°
Jun
6527.7° / 13.8°
Jul
6529.4° / 15.5°
Aug
7128.5° / 14.3°
Sep
7524.9° / 9.6°
Oct
4917.7° / 3.2°
Nov
129.2° / -2.6°
Dec
52.1° / -8.3°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | -0.7°C | -11.8°C | 42 mm | 6.5 | 9 h 25 | 5 | Strong coverage |
| February | 1.9°C | -9.8°C | 46 mm | 6.2 | 10 h 30 | 5 | Strong coverage |
| March | 8.6°C | -3.6°C | 65 mm | 7.1 | 11 h 48 | 8 | Strong coverage |
| April | 15.8°C | 2°C | 101 mm | 9.6 | 13 h 18 | 34 | Strong coverage |
| May | 22.4°C | 8.3°C | 117 mm | 10.5 | 14 h 33 | 64 | Strong coverage |
| June | 27.7°C | 13.8°C | 141 mm | 10.1 | 15 h 14 | 65 | Strong coverage |
| July | 29.4°C | 15.5°C | 124 mm | 7.5 | 14 h 58 | 65 | Strong coverage |
| August | 28.5°C | 14.3°C | 99 mm | 7.3 | 13 h 53 | 71 | Strong coverage |
| September | 24.9°C | 9.6°C | 94 mm | 7 | 12 h 26 | 75 | Strong coverage |
| October | 17.7°C | 3.2°C | 77 mm | 6.7 | 11 h | 49 | Strong coverage |
| November | 9.2°C | -2.6°C | 67 mm | 6.6 | 9 h 44 | 12 | Strong coverage |
| December | 2.1°C | -8.3°C | 56 mm | 7.1 | 9 h 07 | 5 | Strong coverage |
What has changed
Georgetown runs +1.1°C
on the 1961–1990 baseline.
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.
Jan
+1.7
Feb
+0.9
Mar
+1.6
Apr
-0.3
May
+0.5
Jun
+0.8
Jul
+0.3
Aug
+0.4
Sep
+2.0
Oct
+0.9
Nov
+0.9
Dec
+2.9
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 16.1°C27 Jan 1944 | -38.9°C31 Jan 2019 | 51 mm11 Jan 1996 | 111 mm1960 · driest 2 mm in 1928 | 128 |
| February | 23.9°C28 Feb 2024 | -37.8°C1 Feb 2019 | 52 mm9 Feb 2001 | 115 mm2008 · driest 4 mm in 1982 | 126 |
| March | 29.4°C30 Mar 1986 | -26.7°C1 Mar 1962 | 73 mm5 Mar 1976 | 151 mm2009 · driest 7 mm in 1910 | 127 |
| April | 33.3°C10 Apr 1930 | -18.9°C7 Apr 1982 | 96 mm18 Apr 2013 | 223 mm2013 · driest 3 mm in 1915 | 125 |
| May | 40.0°C31 May 1934 | -9.4°C7 May 1989 | 102 mm14 May 1983 | 253 mm1970 · driest 13 mm in 1992 | 129 |
| June | 40.0°C28 Jun 1934 | -0.6°C12 Jun 1903 | 177 mm4 Jun 2002 | 266 mm2000 · driest 8 mm in 1922 | 127 |
| July | 42.2°C12 Jul 1936 | 1.7°C2 Jul 1904 | 117 mm24 Jul 2010 | 298 mm2010 · driest 11 mm in 1991 | 128 |
| August | 39.4°C18 Aug 1936 | 0.0°C28 Aug 1986 | 127 mm11 Aug 1911 | 310 mm1911 · driest 7 mm in 1901 | 126 |
| September | 37.2°C7 Sep 1939 | -10.0°C30 Sep 1899 | 127 mm14 Sep 1961 | 268 mm1970 · driest 2 mm in 1979 | 127 |
| October | 32.8°C4 Oct 1997 | -15.6°C30 Oct 1925 | 98 mm31 Oct 1960 | 189 mm1919 · driest 0 mm in 1952 | 127 |
| November | 26.1°C2 Nov 2000 | -26.1°C29 Nov 1976 | 100 mm17 Nov 1952 | 240 mm1934 · driest 1 mm in 1917 | 128 |
| December | 21.7°C16 Dec 2021 | -33.3°C26 Dec 1914 | 56 mm15 Dec 1971 | 153 mm2015 · driest 7 mm in 1989 | 129 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | 1 | 5 |
| February | 0 | 0 | 26 | 1 | 4 |
| March | <1 | 0 | 24 | 2 | 2 |
| April | 3 | <1 | 11 | 3 | <1 |
| May | 11 | 3 | 2 | 4 | 0 |
| June | 23 | 10 | 0 | 4 | 0 |
| July | 29 | 14 | 0 | 4 | 0 |
| August | 28 | 11 | 0 | 3 | 0 |
| September | 16 | 5 | 1 | 3 | 0 |
| October | 4 | <1 | 10 | 3 | <1 |
| November | <1 | 0 | 21 | 3 | <1 |
| December | 0 | 0 | 28 | 2 | 5 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 19% | 3% | 14% | -4.9–2.4°C |
| February | <1% | 19% | 4% | 16% | -3.1–5.1°C |
| March | 4% | 24% | 6% | 26% | 4.0–11.3°C |
| April | 20% | 30% | 10% | 37% | 13.0–18.6°C |
| May | 48% | 32% | 12% | 41% | 19.4–25.1°C |
| June | 67% | 31% | 13% | 36% | 24.9–29.3°C |
| July | 75% | 25% | 11% | 26% | 27.6–31.9°C |
| August | 75% | 24% | 10% | 24% | 26.5–30.5°C |
| September | 63% | 24% | 9% | 25% | 22.2–26.8°C |
| October | 32% | 21% | 8% | 21% | 15.3–20.7°C |
| November | 4% | 21% | 7% | 19% | 5.5–11.4°C |
| December | <1% | 20% | 5% | 17% | -2.4–4.7°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
Nearby, measured,
and named.
- Place identity
- GeoNames 4893637
- NOAA station
- USC00115901 · MT CARROLL
- Station distance
- 13.6 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 29 usable years
- Daylight
- Calculated from latitude 42.14°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.