September
September · May · October
United States · 1991–2020
September leads for comfortable weather in Pembroke: typically 27.9°C by day, 15.4°C at night, with 94 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · October
August · June · July
October · April · November
The weakest month is January, scoring 5 against September’s 75 — days reach only 6.8°C, 17° 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 | 6.8°C | -3.5°C | 88 mm | 7.5 | 9 h 54 | 5 | Good coverage |
| February | 9°C | -2.1°C | 105 mm | 7.5 | 10 h 47 | 6 | Good coverage |
| March | 15°C | 2.8°C | 106 mm | 9.1 | 11 h 51 | 33 | Good coverage |
| April | 21°C | 7.9°C | 115 mm | 9.1 | 13 h 05 | 61 | Good coverage |
| May | 25.4°C | 13.5°C | 129 mm | 9.8 | 14 h 07 | 73 | Good coverage |
| June | 29.6°C | 18.2°C | 108 mm | 7.6 | 14 h 40 | 61 | Good coverage |
| July | 31.4°C | 20.2°C | 111 mm | 7.3 | 14 h 27 | 51 | Good coverage |
| August | 31.3°C | 19.3°C | 97 mm | 6.5 | 13 h 34 | 56 | Good coverage |
| September | 27.9°C | 15.4°C | 94 mm | 6.3 | 12 h 22 | 75 | Good coverage |
| October | 21.8°C | 8.6°C | 89 mm | 6.1 | 11 h 11 | 71 | Good coverage |
| November | 15°C | 2.9°C | 100 mm | 7.9 | 10 h 09 | 35 | Good coverage |
| December | 8.9°C | -1°C | 106 mm | 7.6 | 9 h 39 | 7 | Good 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 | 25.6°C24 Jan 1943 | -28.9°C24 Jan 1963 | 135 mm8 Jan 1920 | 555 mm1937 · driest 0 mm in 2015 | 123 |
| February | 27.8°C14 Feb 1962 | -30.0°C2 Feb 1951 | 121 mm14 Feb 1949 | 343 mm1989 · driest 0 mm in 2014 | 121 |
| March | 34.4°C24 Mar 1929 | -19.4°C5 Mar 1960 | 102 mm12 Mar 1975 | 331 mm1975 · driest 0 mm in 2015 | 121 |
| April | 35.0°C24 Apr 1925 | -6.7°C2 Apr 1924 | 160 mm2 Apr 1912 | 367 mm2025 · driest 0 mm in 2013 | 122 |
| May | 37.8°C31 May 1911 | -1.1°C4 May 1976 | 136 mm1 May 1919 | 370 mm1919 · driest 0 mm in 2015 | 124 |
| June | 41.1°C30 Jun 1913 | 4.4°C2 Jun 1956 | 107 mm28 Jun 1960 | 338 mm1900 · driest 0 mm in 2014 | 124 |
| July | 43.3°C13 Jul 1936 | 7.2°C24 Jul 1947 | 105 mm26 Jul 1933 | 420 mm2016 · driest 0 mm in 2015 | 121 |
| August | 43.9°C9 Aug 1930 | 5.0°C31 Aug 1946 | 164 mm29 Aug 2005 | 409 mm2005 · driest 0 mm in 2015 | 119 |
| September | 42.2°C6 Sep 1925 | -0.6°C24 Sep 1928 | 154 mm27 Sep 2002 | 293 mm2006 · driest 0 mm in 2015 | 121 |
| October | 36.7°C1 Oct 1953 | -6.7°C24 Oct 1981 | 142 mm7 Oct 1900 | 266 mm1919 · driest 0 mm in 2014 | 123 |
| November | 30.6°C1 Nov 1922 | -20.0°C25 Nov 1950 | 157 mm24 Nov 1900 | 347 mm1957 · driest 0 mm in 2014 | 123 |
| December | 25.6°C31 Dec 1951 | -25.6°C22 Dec 1989 | 121 mm15 Dec 1902 | 371 mm1978 · driest 0 mm in 2013 | 124 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 21 | 3 | 1 |
| February | <1 | 0 | 19 | 4 | 1 |
| March | 2 | <1 | 10 | 3 | <1 |
| April | 9 | 1 | 2 | 4 | <1 |
| May | 18 | 5 | 0 | 4 | 0 |
| June | 27 | 16 | 0 | 3 | 0 |
| July | 30 | 23 | 0 | 4 | 0 |
| August | 29 | 20 | 0 | 3 | 0 |
| September | 23 | 11 | 0 | 3 | 0 |
| October | 10 | 2 | 2 | 3 | <1 |
| November | 2 | 0 | 11 | 3 | 0 |
| December | 0 | 0 | 18 | 3 | <1 |
The best month has moved. On the 1961–1990 numbers the strongest month here was September (scoring 78); on 2011–2025 it is May (86). 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 | 2% | 28% | 12% | 31% | 3.6–11.1°C |
| February | 5% | 28% | 12% | 32% | 5.4–12.9°C |
| March | 20% | 31% | 14% | 40% | 11.6–19.0°C |
| April | 42% | 31% | 13% | 40% | 18.8–23.4°C |
| May | 63% | 30% | 12% | 36% | 23.4–28.3°C |
| June | 72% | 28% | 12% | 30% | 28.0–32.6°C |
| July | 75% | 25% | 11% | 26% | 30.2–34.9°C |
| August | 77% | 23% | 9% | 21% | 29.6–34.1°C |
| September | 76% | 22% | 9% | 20% | 26.0–31.8°C |
| October | 59% | 20% | 9% | 20% | 20.0–25.6°C |
| November | 20% | 26% | 11% | 27% | 12.7–17.4°C |
| December | 2% | 26% | 12% | 32% | 5.9–12.2°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