May
May · September · October
United States · 1991–2020
May leads for comfortable weather in Delmar: typically 24.6°C by day, 12.5°C at night, with 85 mm of rain. Based on measured 1991–2020 NOAA station history.
May · September · October
June · July · August
October · April · May
The weakest month is January, scoring 7 against May’s 82 — days reach only 8.4°C, 16° 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 | 8.4°C | -1.3°C | 93 mm | 8.2 | 9 h 45 | 7 | Good coverage |
| February | 9.9°C | -0.8°C | 79 mm | 7.5 | 10 h 42 | 15 | Good coverage |
| March | 14.3°C | 2.9°C | 114 mm | 8.7 | 11 h 50 | 30 | Good coverage |
| April | 20.5°C | 7.9°C | 90 mm | 8.5 | 13 h 09 | 63 | Good coverage |
| May | 24.6°C | 12.5°C | 85 mm | 8.3 | 14 h 14 | 82 | Good coverage |
| June | 28.9°C | 18.1°C | 100 mm | 8.5 | 14 h 50 | 64 | Good coverage |
| July | 31.2°C | 20.8°C | 114 mm | 8 | 14 h 36 | 50 | Good coverage |
| August | 30.3°C | 19.8°C | 135 mm | 8.1 | 13 h 39 | 52 | Good coverage |
| September | 27°C | 16.3°C | 106 mm | 7 | 12 h 23 | 74 | Good coverage |
| October | 21.2°C | 9.6°C | 89 mm | 6.6 | 11 h 08 | 70 | Good coverage |
| November | 15.7°C | 5.1°C | 89 mm | 7 | 10 h 02 | 43 | Good coverage |
| December | 10.2°C | 0.5°C | 95 mm | 8.5 | 9 h 30 | 15 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 25.0°C31 Jan 2002 | -22.8°C21 Jan 1918 | 114 mm28 Jan 1998 | 250 mm1937 · driest 3 mm in 1921 | 104 |
| February | 26.7°C25 Feb 1930 | -18.9°C5 Feb 1918 | 65 mm4 Feb 1920 | 198 mm1920 · driest 9 mm in 2009 | 104 |
| March | 33.9°C29 Mar 1907 | -17.2°C9 Mar 1911 | 97 mm21 Mar 2001 | 226 mm1994 · driest 3 mm in 2006 | 103 |
| April | 35.6°C19 Apr 2002 | -9.4°C1 Apr 1923 | 93 mm28 Apr 1954 | 172 mm1964 · driest 10 mm in 1985 | 105 |
| May | 36.7°C20 May 1911 | -5.6°C11 May 2008 | 104 mm20 May 2005 | 264 mm1948 · driest 5 mm in 1911 | 104 |
| June | 38.9°C6 Jun 1925 | 3.3°C1 Jun 1938 | 96 mm13 Jun 1962 | 282 mm1972 · driest 12 mm in 1988 | 104 |
| July | 41.1°C21 Jul 1930 | 3.9°C15 Jul 2001 | 149 mm29 Jul 1994 | 349 mm1994 · driest 22 mm in 2002 | 105 |
| August | 41.1°C7 Aug 1918 | 4.4°C3 Aug 2001 | 226 mm30 Aug 1936 | 348 mm1967 · driest 9 mm in 1966 | 103 |
| September | 37.8°C1 Sep 1932 | 1.7°C21 Sep 1956 | 191 mm6 Sep 1935 | 377 mm1935 · driest 7 mm in 1921 | 103 |
| October | 33.9°C9 Oct 2007 | -3.9°C30 Oct 1928 | 142 mm26 Oct 1971 | 286 mm1976 · driest 4 mm in 2000 | 104 |
| November | 30.0°C1 Nov 1950 | -12.2°C29 Nov 1930 | 68 mm6 Nov 2003 | 225 mm1911 · driest 3 mm in 2001 | 104 |
| December | 25.6°C7 Dec 1998 | -20.0°C16 Dec 1958 | 60 mm26 Dec 1969 | 212 mm2009 · driest 15 mm in 1988 | 104 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | <1 | 0 | 20 | 3 |
| February | <1 | 0 | 17 | 3 |
| March | 1 | 0 | 10 | 4 |
| April | 7 | <1 | 2 | 3 |
| May | 16 | 4 | <1 | 3 |
| June | 25 | 13 | 0 | 3 |
| July | 30 | 21 | 0 | 3 |
| August | 30 | 18 | 0 | 4 |
| September | 22 | 6 | 0 | 3 |
| October | 7 | <1 | <1 | 3 |
| November | <1 | 0 | 6 | 3 |
| December | <1 | 0 | 16 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 3% | 29% | 11% | 31% | 5.1–11.7°C |
| February | 4% | 29% | 11% | 33% | 5.6–12.7°C |
| March | 13% | 30% | 12% | 36% | 10.8–16.5°C |
| April | 37% | 29% | 10% | 30% | 17.5–21.8°C |
| May | 65% | 27% | 10% | 30% | 22.8–26.9°C |
| June | 73% | 27% | 11% | 27% | 27.0–30.5°C |
| July | 72% | 28% | 11% | 31% | 29.4–32.3°C |
| August | 72% | 28% | 13% | 27% | 28.6–31.4°C |
| September | 77% | 22% | 10% | 19% | 25.4–28.8°C |
| October | 52% | 21% | 9% | 18% | 19.4–23.0°C |
| November | 17% | 23% | 9% | 21% | 13.4–17.8°C |
| December | 3% | 27% | 10% | 29% | 5.9–12.7°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