September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Melrose: typically 24.9°C by day, 11.4°C at night, with 78 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 81 — days reach only -0.1°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 | -0.1°C | -8.7°C | 60 mm | 7.8 | 9 h 31 | 5 | Strong coverage |
| February | 1.8°C | -7.6°C | 51 mm | 7.4 | 10 h 34 | 5 | Strong coverage |
| March | 7.9°C | -2.9°C | 65 mm | 8.1 | 11 h 48 | 6 | Strong coverage |
| April | 15.5°C | 2.7°C | 88 mm | 9.5 | 13 h 15 | 37 | Strong coverage |
| May | 22°C | 9.2°C | 112 mm | 10.7 | 14 h 27 | 65 | Strong coverage |
| June | 27°C | 15.1°C | 101 mm | 9.2 | 15 h 07 | 75 | Strong coverage |
| July | 29°C | 16.6°C | 92 mm | 8 | 14 h 51 | 68 | Strong coverage |
| August | 27.9°C | 15.3°C | 92 mm | 7.4 | 13 h 49 | 75 | Strong coverage |
| September | 24.9°C | 11.4°C | 78 mm | 6.6 | 12 h 25 | 81 | Strong coverage |
| October | 17.8°C | 5.3°C | 72 mm | 7.9 | 11 h 02 | 52 | Strong coverage |
| November | 9.5°C | -0.4°C | 71 mm | 8.1 | 9 h 49 | 15 | Strong coverage |
| December | 2.8°C | -5.3°C | 58 mm | 7.2 | 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 | 20.6°C25 Jan 1950 | -31.7°C21 Jan 1984 | 51 mm17 Jan 1952 | 155 mm1937 · driest 6 mm in 1961 | 112 |
| February | 22.8°C26 Feb 2000 | -28.9°C12 Feb 2014 | 54 mm27 Feb 1997 | 152 mm1990 · driest 0 mm in 1987 | 112 |
| March | 30.6°C22 Mar 2012 | -25.0°C8 Mar 1943 | 51 mm31 Mar 1945 | 155 mm1945 · driest 10 mm in 1981 | 112 |
| April | 33.9°C28 Apr 1915 | -13.9°C7 Apr 1982 | 75 mm24 Apr 1955 | 181 mm2024 · driest 14 mm in 2004 | 111 |
| May | 36.7°C29 May 2012 | -5.0°C10 May 1966 | 100 mm13 May 1970 | 239 mm1943 · driest 20 mm in 1939 | 110 |
| June | 41.7°C29 Jun 2012 | 1.1°C23 Jun 1918 | 85 mm8 Jun 1951 | 275 mm2015 · driest 6 mm in 1988 | 110 |
| July | 43.9°C14 Jul 1936 | 3.9°C20 Jul 1996 | 82 mm11 Jul 1923 | 216 mm2003 · driest 15 mm in 1919 | 109 |
| August | 41.1°C6 Aug 1918 | 1.1°C31 Aug 1915 | 111 mm21 Aug 2007 | 225 mm2007 · driest 9 mm in 1969 | 110 |
| September | 38.9°C1 Sep 1953 | -3.3°C29 Sep 1942 | 162 mm14 Sep 1972 | 287 mm1972 · driest 10 mm in 1928 | 109 |
| October | 33.3°C4 Oct 1951 | -10.0°C29 Oct 1925 | 89 mm26 Oct 1991 | 193 mm1991 · driest 6 mm in 1964 | 110 |
| November | 26.7°C1 Nov 1933 | -19.4°C30 Nov 1929 | 61 mm19 Nov 2017 | 185 mm1982 · driest 8 mm in 1976 | 110 |
| December | 22.2°C24 Dec 2015 | -31.1°C15 Dec 1917 | 53 mm28 Dec 1968 | 163 mm1990 · driest 6 mm in 1958 | 108 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 28 | 2 | 6 |
| February | 0 | 0 | 26 | 2 | 5 |
| March | <1 | 0 | 22 | 2 | 2 |
| April | 2 | 0 | 9 | 3 | <1 |
| May | 11 | 3 | <1 | 4 | 0 |
| June | 22 | 8 | 0 | 4 | 0 |
| July | 28 | 13 | 0 | 3 | 0 |
| August | 26 | 9 | 0 | 3 | 0 |
| September | 16 | 5 | <1 | 3 | 0 |
| October | 5 | <1 | 5 | 2 | 0 |
| November | <1 | 0 | 16 | 2 | 1 |
| December | 0 | 0 | 25 | 2 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 25% | 6% | 26% | -3.2–4.5°C |
| February | <1% | 25% | 5% | 26% | -0.9–6.2°C |
| March | 5% | 28% | 8% | 34% | 4.8–12.0°C |
| April | 20% | 34% | 10% | 45% | 13.3–18.8°C |
| May | 46% | 33% | 11% | 43% | 19.2–25.6°C |
| June | 68% | 29% | 11% | 34% | 24.9–29.8°C |
| July | 74% | 26% | 10% | 25% | 27.8–32.3°C |
| August | 76% | 23% | 8% | 21% | 26.5–30.7°C |
| September | 66% | 24% | 9% | 23% | 22.8–27.6°C |
| October | 33% | 24% | 7% | 25% | 15.8–21.0°C |
| November | 5% | 28% | 7% | 31% | 6.9–12.6°C |
| December | 0% | 26% | 6% | 28% | -0.6–6.4°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