September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Melrose: typically 24.7°C by day, 10.4°C at night, with 96 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · August
July · August · June
October · September · May
The weakest month is January, scoring 5 against September’s 77 — days reach only -0.4°C, 24° 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 | -0.4°C | -11.6°C | 25 mm | 4 | 9 h 32 | 5 | Strong coverage |
| February | 2.3°C | -9.7°C | 34 mm | 5 | 10 h 34 | 5 | Strong coverage |
| March | 9.4°C | -3.6°C | 54 mm | 6.4 | 11 h 49 | 13 | Strong coverage |
| April | 16.3°C | 2.2°C | 106 mm | 8.7 | 13 h 15 | 37 | Strong coverage |
| May | 21.6°C | 8.4°C | 145 mm | 11.2 | 14 h 27 | 57 | Strong coverage |
| June | 27°C | 14.4°C | 129 mm | 9.5 | 15 h 06 | 70 | Strong coverage |
| July | 29.2°C | 16.6°C | 120 mm | 7.9 | 14 h 51 | 64 | Strong coverage |
| August | 28.5°C | 15.5°C | 114 mm | 8.6 | 13 h 48 | 68 | Strong coverage |
| September | 24.7°C | 10.4°C | 96 mm | 7 | 12 h 25 | 77 | Strong coverage |
| October | 17.9°C | 3.7°C | 73 mm | 6.6 | 11 h 02 | 51 | Strong coverage |
| November | 9.4°C | -2.9°C | 50 mm | 5.6 | 9 h 50 | 15 | Strong coverage |
| December | 2.7°C | -8.4°C | 35 mm | 4.6 | 9 h 14 | 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°C9 Jan 2003 | -37.2°C31 Jan 1996 | 48 mm20 Jan 1904 | 89 mm1898 · driest 0 mm in 1919 | 129 |
| February | 25.6°C24 Feb 1930 | -38.9°C3 Feb 1996 | 50 mm21 Feb 1997 | 120 mm1911 · driest 0 mm in 1917 | 130 |
| March | 32.8°C22 Mar 2026 | -35.6°C1 Mar 1962 | 46 mm24 Mar 1904 | 180 mm1961 · driest 0 mm in 2014 | 130 |
| April | 32.8°C10 Apr 1930 | -13.3°C3 Apr 1936 | 105 mm18 Apr 2013 | 229 mm1991 · driest 11 mm in 1910 | 131 |
| May | 40.0°C30 May 1934 | -7.8°C14 May 2002 | 97 mm9 May 1950 | 266 mm1996 · driest 19 mm in 1955 | 130 |
| June | 40.6°C29 Jun 1934 | 1.1°C3 Jun 1969 | 108 mm5 Jun 1947 | 318 mm1947 · driest 0 mm in 1933 | 131 |
| July | 45.0°C25 Jul 1936 | 3.9°C5 Jul 1972 | 140 mm5 Jul 1993 | 446 mm1993 · driest 2 mm in 1983 | 131 |
| August | 45.6°C9 Aug 1934 | 1.7°C20 Aug 1950 | 285 mm27 Aug 1903 | 357 mm1903 · driest 5 mm in 2013 | 129 |
| September | 39.4°C4 Sep 1913 | -6.7°C28 Sep 1942 | 204 mm13 Sep 1961 | 364 mm1961 · driest 7 mm in 1939 | 130 |
| October | 35.0°C5 Oct 1963 | -17.8°C30 Oct 1925 | 102 mm9 Oct 1982 | 225 mm1941 · driest 0 mm in 1914 | 130 |
| November | 27.8°C1 Nov 1938 | -25.0°C8 Nov 1991 | 126 mm17 Nov 1952 | 176 mm1983 · driest 0 mm in 1904 | 129 |
| December | 23.3°C16 Dec 2021 | -35.0°C23 Dec 1989 | 50 mm8 Dec 1980 | 142 mm2015 · driest 0 mm in 1915 | 129 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 28 | <1 | 3 |
| February | 0 | 0 | 26 | <1 | 4 |
| March | <1 | 0 | 23 | 2 | 2 |
| April | 3 | <1 | 11 | 4 | <1 |
| May | 9 | 1 | 2 | 4 | 0 |
| June | 22 | 7 | 0 | 5 | 0 |
| July | 27 | 13 | 0 | 4 | 0 |
| August | 26 | 11 | 0 | 4 | 0 |
| September | 15 | 5 | <1 | 3 | 0 |
| October | 4 | <1 | 9 | 2 | <1 |
| November | <1 | 0 | 20 | 2 | <1 |
| December | 0 | 0 | 27 | 1 | 3 |
The best month has moved. On the 1961–1990 numbers the strongest month here was May (scoring 79); on 2011–2025 it is September (81). 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% | 13% | 3% | 6% | -3.8–4.3°C |
| February | <1% | 15% | 3% | 10% | -2.4–6.8°C |
| March | 9% | 19% | 6% | 17% | 5.4–13.5°C |
| April | 28% | 26% | 10% | 29% | 14.0–19.9°C |
| May | 51% | 30% | 13% | 36% | 20.2–25.6°C |
| June | 70% | 28% | 14% | 31% | 25.1–29.7°C |
| July | 79% | 21% | 10% | 20% | 27.9–33.0°C |
| August | 77% | 23% | 10% | 23% | 27.2–31.9°C |
| September | 68% | 22% | 11% | 23% | 23.0–27.9°C |
| October | 41% | 19% | 7% | 18% | 16.2–21.9°C |
| November | 7% | 16% | 5% | 12% | 6.3–13.4°C |
| December | <1% | 14% | 3% | 9% | -1.3–6.2°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