September
September · June · August
83climate match
United States · 1991–2020
Best time to visit
Georgetown.
September leads for comfortable weather in Georgetown: typically 23.9°C by day, 12.2°C at night, with 89 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high23.9°C
Typical low12.2°C
Rain in September89 mm
July
July · August · June
72climate match
May
May · September · October
74climate match
The weakest month is January, scoring 5 against September’s 83 — days reach only -0.1°C, 24° 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
5-0.1° / -7.8°
Feb
52° / -6.5°
Mar
88.3° / -2.1°
Apr
3715.4° / 3.4°
May
6521.5° / 9.5°
Jun
7626.7° / 15.1°
Jul
6828.5° / 17.3°
Aug
7227.4° / 16.4°
Sep
8323.9° / 12.2°
Oct
4716.9° / 6.2°
Nov
149.1° / 0.4°
Dec
52.7° / -4.5°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | -0.1°C | -7.8°C | 68 mm | 10.9 | 9 h 27 | 5 | Strong coverage |
| February | 2°C | -6.5°C | 59 mm | 8.8 | 10 h 31 | 5 | Strong coverage |
| March | 8.3°C | -2.1°C | 59 mm | 9 | 11 h 48 | 8 | Strong coverage |
| April | 15.4°C | 3.4°C | 89 mm | 10.3 | 13 h 16 | 37 | Strong coverage |
| May | 21.5°C | 9.5°C | 107 mm | 10.2 | 14 h 31 | 65 | Strong coverage |
| June | 26.7°C | 15.1°C | 103 mm | 9.1 | 15 h 11 | 76 | Strong coverage |
| July | 28.5°C | 17.3°C | 96 mm | 8.1 | 14 h 55 | 68 | Strong coverage |
| August | 27.4°C | 16.4°C | 102 mm | 8.3 | 13 h 51 | 72 | Strong coverage |
| September | 23.9°C | 12.2°C | 89 mm | 7.4 | 12 h 25 | 83 | Strong coverage |
| October | 16.9°C | 6.2°C | 94 mm | 8.8 | 11 h 00 | 47 | Strong coverage |
| November | 9.1°C | 0.4°C | 71 mm | 9.4 | 9 h 46 | 14 | Strong coverage |
| December | 2.7°C | -4.5°C | 61 mm | 9.9 | 9 h 10 | 5 | Strong coverage |
What has changed
Georgetown runs +1.0°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
+1.1
Feb
+1.2
Mar
+1.5
Apr
+0.3
May
+1.1
Jun
+0.9
Jul
+0.6
Aug
+0.8
Sep
+1.4
Oct
+0.8
Nov
+0.2
Dec
+2.2
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 20.0°C25 Jan 1950 | -30.0°C20 Jan 1943 | 71 mm12 Jan 1960 | 141 mm1897 · driest 8 mm in 1919 | 127 |
| February | 23.3°C25 Feb 2000 | -28.9°C10 Feb 1899 | 95 mm20 Feb 2018 | 205 mm2018 · driest 8 mm in 1917 | 129 |
| March | 29.4°C31 Mar 1981 | -25.0°C8 Mar 1943 | 55 mm19 Mar 1948 | 202 mm1976 · driest 11 mm in 1915 | 130 |
| April | 32.8°C30 Apr 1942 | -11.7°C8 Apr 1972 | 63 mm25 Apr 2007 | 193 mm1929 · driest 13 mm in 1971 | 130 |
| May | 36.1°C27 May 2012 | -4.4°C6 May 1968 | 75 mm6 May 1976 | 212 mm2018 · driest 21 mm in 1994 | 129 |
| June | 41.1°C1 Jun 1934 | 1.7°C16 Jun 1917 | 119 mm25 Jun 1968 | 276 mm1993 · driest 12 mm in 1988 | 129 |
| July | 42.8°C24 Jul 1934 | 5.6°C2 Jul 2001 | 93 mm9 Jul 1989 | 220 mm2006 · driest 13 mm in 1936 | 129 |
| August | 40.6°C9 Aug 1934 | 4.4°C2 Aug 1927 | 195 mm15 Aug 2016 | 326 mm2016 · driest 8 mm in 1950 | 128 |
| September | 37.2°C8 Sep 1933 | -1.7°C28 Sep 1942 | 167 mm13 Sep 2008 | 354 mm2008 · driest 0 mm in 1979 | 128 |
| October | 33.3°C6 Oct 1963 | -11.1°C11 Oct 1906 | 97 mm14 Oct 2017 | 248 mm1954 · driest 8 mm in 1908 | 128 |
| November | 27.8°C1 Nov 1950 | -21.7°C25 Nov 1950 | 100 mm27 Nov 1990 | 198 mm1927 · driest 7 mm in 2012 | 128 |
| December | 21.1°C2 Dec 1982 | -27.8°C28 Dec 1924 | 76 mm24 Dec 1965 | 210 mm1895 · driest 9 mm in 1896 | 129 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 28 | 2 | 13 |
| February | 0 | 0 | 25 | 1 | 10 |
| March | <1 | 0 | 21 | 2 | 5 |
| April | 2 | <1 | 9 | 3 | 2 |
| May | 10 | 3 | <1 | 4 | 0 |
| June | 21 | 8 | 0 | 3 | 0 |
| July | 27 | 11 | 0 | 3 | 0 |
| August | 25 | 7 | 0 | 3 | 0 |
| September | 14 | 4 | 0 | 3 | <1 |
| October | 3 | <1 | 3 | 3 | <1 |
| November | <1 | 0 | 15 | 2 | 3 |
| December | 0 | 0 | 25 | 2 | 9 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 33% | 5% | 42% | -3.5–3.3°C |
| February | <1% | 30% | 4% | 36% | -2.6–5.1°C |
| March | 5% | 32% | 8% | 42% | 3.8–11.9°C |
| April | 18% | 33% | 10% | 44% | 12.4–17.7°C |
| May | 44% | 31% | 10% | 38% | 18.4–24.4°C |
| June | 66% | 29% | 11% | 34% | 24.4–28.6°C |
| July | 75% | 25% | 10% | 26% | 26.9–31.2°C |
| August | 74% | 25% | 10% | 25% | 25.8–29.9°C |
| September | 61% | 26% | 9% | 29% | 22.0–26.4°C |
| October | 27% | 28% | 9% | 34% | 15.1–19.9°C |
| November | 4% | 32% | 8% | 41% | 6.0–11.7°C |
| December | 0% | 33% | 6% | 42% | -1.4–5.3°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
Nearby, measured,
and named.
- Place identity
- GeoNames 4920683
- NOAA station
- USW00014848 · S BEND AP
- Station distance
- 7.7 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 30 usable years
- Daylight
- Calculated from latitude 41.73°, 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.