September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Shoreham: typically 24.2°C by day, 11.7°C at night, with 88 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · August
July · August · June
May · September · October
The weakest month is January, scoring 5 against September’s 81 — days reach only 0.6°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 | Sea | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|---|
| January | 0.6°C | -7°C | 69 mm | 11 | 3.9°C | 9 h 25 | 5 | Strong coverage |
| February | 2.2°C | -6.1°C | 46 mm | 7.9 | 2.7°C | 10 h 30 | 5 | Strong coverage |
| March | 8.1°C | -2.4°C | 53 mm | 8.1 | 2.5°C | 11 h 48 | 9 | Strong coverage |
| April | 15°C | 2.9°C | 99 mm | 11 | 3.9°C | 13 h 17 | 32 | Strong coverage |
| May | 21.2°C | 8.4°C | 99 mm | 10 | 7.3°C | 14 h 32 | 64 | Strong coverage |
| June | 26.4°C | 13.7°C | 93 mm | 8.7 | 14.2°C | 15 h 14 | 76 | Strong coverage |
| July | 28.7°C | 16.6°C | 82 mm | 6.9 | 21.0°C | 14 h 57 | 71 | Strong coverage |
| August | 27.6°C | 15.5°C | 105 mm | 8 | 22.5°C | 13 h 52 | 73 | Strong coverage |
| September | 24.2°C | 11.7°C | 88 mm | 8.2 | 20.3°C | 12 h 26 | 81 | Strong coverage |
| October | 17.7°C | 6.5°C | 112 mm | 10.1 | 14.9°C | 11 h | 47 | Strong coverage |
| November | 9.6°C | 0.8°C | 77 mm | 9.1 | 9.5°C | 9 h 44 | 16 | Strong coverage |
| December | 3.2°C | -3.8°C | 60 mm | 11.1 | 6.0°C | 9 h 07 | 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 | 20.0°C25 Jan 1950 | -27.8°C21 Jan 2019 | 55 mm12 Jan 1960 | 189 mm2026 · driest 1 mm in 1982 | 90 |
| February | 22.8°C27 Feb 2024 | -25.0°C1 Feb 2019 | 60 mm21 Feb 1997 | 123 mm2018 · driest 0 mm in 1987 | 90 |
| March | 30.0°C21 Mar 2012 | -22.8°C3 Mar 2014 | 64 mm19 Mar 1948 | 143 mm1985 · driest 4 mm in 2013 | 90 |
| April | 31.7°C16 Apr 2002 | -12.8°C7 Apr 1982 | 107 mm5 Apr 1947 | 367 mm2026 · driest 0 mm in 1894 | 88 |
| May | 36.1°C29 May 2006 | -5.0°C10 May 1947 | 168 mm30 May 1943 | 329 mm1943 · driest 3 mm in 1897 | 92 |
| June | 38.3°C20 Jun 1953 | -0.6°C1 Jun 1993 | 79 mm2 Jun 1950 | 225 mm1993 · driest 1 mm in 2025 | 90 |
| July | 40.0°C21 Jul 2002 | 2.8°C2 Jul 2001 | 123 mm11 Jul 1943 | 308 mm1943 · driest 0 mm in 1946 | 89 |
| August | 38.9°C21 Aug 2003 | 2.8°C28 Aug 1982 | 98 mm30 Aug 2016 | 285 mm2007 · driest 0 mm in 1950 | 88 |
| September | 36.7°C3 Sep 2011 | -5.0°C27 Sep 1989 | 70 mm1 Sep 1968 | 262 mm2008 · driest 0 mm in 1979 | 90 |
| October | 33.3°C4 Oct 2005 | -9.4°C30 Oct 1988 | 82 mm31 Oct 2013 | 358 mm2017 · driest 4 mm in 1895 | 89 |
| November | 27.8°C1 Nov 1950 | -18.3°C24 Nov 1950 | 71 mm5 Nov 1990 | 220 mm1990 · driest 24 mm in 2023 | 89 |
| December | 20.6°C1 Dec 1970 | -26.1°C23 Dec 1989 | 60 mm3 Dec 1982 | 268 mm1895 · driest 12 mm in 1955 | 89 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 27 | 2 | 10 |
| February | 0 | 0 | 25 | 1 | 7 |
| March | <1 | 0 | 22 | 2 | 3 |
| April | 2 | <1 | 9 | 3 | <1 |
| May | 9 | 3 | 2 | 4 | 0 |
| June | 17 | 7 | <1 | 3 | 0 |
| July | 23 | 11 | 0 | 3 | 0 |
| August | 21 | 7 | 0 | 3 | 0 |
| September | 12 | 4 | <1 | 3 | 0 |
| October | 4 | <1 | 3 | 3 | <1 |
| November | 0 | 0 | 14 | 3 | 2 |
| December | 0 | 0 | 24 | 1 | 7 |
The best month has moved. On the 1961–1990 numbers the strongest month here was June (scoring 84); on 2011–2025 it is September (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 | 0% | 34% | 6% | 42% | -2.7–3.6°C |
| February | <1% | 29% | 5% | 33% | -0.8–5.1°C |
| March | 6% | 27% | 6% | 32% | 4.2–11.7°C |
| April | 17% | 33% | 10% | 41% | 11.8–17.8°C |
| May | 43% | 29% | 11% | 33% | 17.8–24.5°C |
| June | 67% | 27% | 10% | 31% | 23.9–28.5°C |
| July | 79% | 21% | 9% | 19% | 26.2–30.3°C |
| August | 78% | 22% | 9% | 20% | 25.4–29.7°C |
| September | 61% | 25% | 11% | 30% | 21.9–26.3°C |
| October | 30% | 28% | 10% | 35% | 14.8–20.1°C |
| November | 5% | 31% | 9% | 37% | 6.2–12.6°C |
| December | 0% | 34% | 6% | 44% | -0.3–6.1°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