August
August · June · July
United States · 1991–2020
August leads for comfortable weather in Harpswell Center: typically 25.8°C by day, 15°C at night, with 75 mm of rain. Based on measured 1991–2020 NOAA station history.
August · June · July
August · July · June
September · June · May
The weakest month is January, scoring 5 against August’s 85 — days reach only -1.2°C, 25° 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 | -1.2°C | -11.4°C | 72 mm | 7.7 | 5.6°C | 9 h 15 | 5 | Good coverage |
| February | 0.5°C | -10.3°C | 80 mm | 7.4 | 4.0°C | 10 h 24 | 5 | Good coverage |
| March | 5.1°C | -4.6°C | 98 mm | 9.1 | 3.6°C | 11 h 47 | 5 | Good coverage |
| April | 11.9°C | 0.8°C | 113 mm | 8.7 | 5.2°C | 13 h 22 | 18 | Good coverage |
| May | 17.9°C | 6.5°C | 99 mm | 10.1 | 8.6°C | 14 h 42 | 49 | Good coverage |
| June | 23.4°C | 12.2°C | 84 mm | 8.1 | 12.7°C | 15 h 26 | 82 | Good coverage |
| July | 26.2°C | 15.2°C | 80 mm | 8.8 | 16.4°C | 15 h 09 | 81 | Good coverage |
| August | 25.8°C | 15°C | 75 mm | 6.1 | 17.3°C | 13 h 59 | 85 | Good coverage |
| September | 21.2°C | 10.2°C | 111 mm | 7.8 | 15.4°C | 12 h 27 | 67 | Good coverage |
| October | 14.6°C | 3.9°C | 120 mm | 8 | 12.2°C | 10 h 56 | 33 | Good coverage |
| November | 8.7°C | -1°C | 118 mm | 9.2 | 9.5°C | 9 h 35 | 5 | Good coverage |
| December | 3°C | -6.6°C | 91 mm | 8.5 | 7.4°C | 8 h 56 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 16.1°C27 Jan 1974 | -34.4°C4 Jan 1981 | 99 mm10 Jan 1987 | 275 mm1979 · driest 0 mm in 1952 | 57 |
| February | 15.0°C27 Feb 1976 | -31.7°C3 Feb 1971 | 77 mm25 Feb 1965 | 189 mm1960 · driest 0 mm in 2007 | 57 |
| March | 30.0°C31 Mar 1998 | -23.3°C10 Mar 1972 | 85 mm22 Mar 1994 | 276 mm1953 · driest 0 mm in 2007 | 56 |
| April | 28.9°C29 Apr 2003 | -10.6°C4 Apr 1954 | 85 mm21 Apr 1991 | 364 mm2005 · driest 29 mm in 1966 | 57 |
| May | 34.4°C22 May 1992 | -2.8°C9 May 1985 | 72 mm11 May 1989 | 272 mm2005 · driest 14 mm in 1965 | 57 |
| June | 37.8°C9 Jun 2004 | 1.7°C4 Jun 2002 | 81 mm2 Jun 2001 | 231 mm1998 · driest 17 mm in 1979 | 58 |
| July | 36.7°C17 Jul 1953 | 5.6°C7 Jul 1965 | 109 mm13 Jul 1996 | 201 mm1988 · driest 15 mm in 1965 | 57 |
| August | 40.0°C2 Aug 1975 | 2.8°C31 Aug 1965 | 149 mm9 Aug 1976 | 253 mm1991 · driest 3 mm in 1996 | 56 |
| September | 35.0°C3 Sep 1973 | -2.2°C28 Sep 1965 | 205 mm11 Sep 1954 | 301 mm1954 · driest 14 mm in 2007 | 56 |
| October | 29.4°C2 Oct 1971 | -8.3°C28 Oct 1974 | 158 mm8 Oct 2005 | 503 mm2005 · driest 0 mm in 2008 | 58 |
| November | 28.3°C8 Nov 2009 | -17.2°C24 Nov 1989 | 86 mm2 Nov 1988 | 364 mm1983 · driest 3 mm in 2007 | 57 |
| December | 23.3°C3 Dec 2009 | -29.4°C26 Dec 1980 | 95 mm4 Dec 1990 | 254 mm1973 · driest 10 mm in 2006 | 57 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 29 | 2 | 8 |
| February | 0 | 0 | 26 | 3 | 6 |
| March | <1 | <1 | 25 | 4 | 6 |
| April | <1 | 0 | 14 | 3 | 1 |
| May | 3 | <1 | 1 | 3 | 0 |
| June | 12 | 3 | 0 | 2 | 0 |
| July | 20 | 5 | 0 | 3 | 0 |
| August | 19 | 4 | 0 | 2 | 0 |
| September | 6 | <1 | <1 | 3 | 0 |
| October | <1 | 0 | 8 | 3 | <1 |
| November | <1 | 0 | 19 | 4 | 1 |
| December | 0 | 0 | 28 | 3 | 5 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 29% | 10% | 35% | -4.1–1.4°C |
| February | 0% | 28% | 11% | 32% | -1.8–2.7°C |
| March | <1% | 29% | 12% | 35% | 2.7–7.1°C |
| April | 5% | 31% | 11% | 39% | 9.8–13.1°C |
| May | 26% | 31% | 10% | 40% | 14.9–19.6°C |
| June | 58% | 29% | 9% | 33% | 20.0–24.6°C |
| July | 72% | 26% | 8% | 27% | 23.9–27.6°C |
| August | 75% | 23% | 8% | 21% | 23.4–26.6°C |
| September | 46% | 24% | 10% | 25% | 19.2–22.0°C |
| October | 10% | 25% | 10% | 28% | 13.3–16.3°C |
| November | 1% | 32% | 14% | 40% | 6.3–10.2°C |
| December | <1% | 29% | 11% | 34% | -0.4–4.9°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