May
May · September · October
United States · 1991–2020
May leads for comfortable weather in Commerce: typically 25.9°C by day, 13.4°C at night, with 144 mm of rain. Based on measured 1991–2020 NOAA station history.
May · September · October
July · August · June
October · April · March
The weakest month is January, scoring 11 against May’s 71 — days reach only 8.6°C, 15° below the 24°C the score treats as ideal, and nights drop to -3.8°C.
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 | 8.6°C | -3.8°C | 56 mm | 3.9 | 9 h 53 | 11 | Good coverage |
| February | 11°C | -2.1°C | 49 mm | 4.7 | 10 h 46 | 23 | Good coverage |
| March | 16.9°C | 3.2°C | 75 mm | 6.3 | 11 h 51 | 47 | Good coverage |
| April | 21.6°C | 7.9°C | 118 mm | 7.8 | 13 h 05 | 63 | Good coverage |
| May | 25.9°C | 13.4°C | 144 mm | 8 | 14 h 07 | 71 | Good coverage |
| June | 30.5°C | 18.9°C | 115 mm | 7 | 14 h 41 | 57 | Good coverage |
| July | 32.7°C | 20.5°C | 100 mm | 5.8 | 14 h 28 | 50 | Good coverage |
| August | 32.4°C | 19.3°C | 87 mm | 5.7 | 13 h 34 | 55 | Good coverage |
| September | 28.4°C | 15.2°C | 117 mm | 6.1 | 12 h 22 | 71 | Good coverage |
| October | 22.3°C | 8.6°C | 103 mm | 6.1 | 11 h 11 | 71 | Good coverage |
| November | 15.4°C | 2.5°C | 97 mm | 5.7 | 10 h 09 | 38 | Good coverage |
| December | 10.2°C | -1.6°C | 67 mm | 4.8 | 9 h 38 | 18 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 25.0°C21 Jan 1933 | -31.7°C22 Jan 1930 | 76 mm6 Jan 2014 | 127 mm1949 · driest 1 mm in 1919 | 84 |
| February | 29.4°C22 Feb 1996 | -33.3°C10 Feb 2011 | 147 mm23 Feb 1985 | 199 mm1985 · driest 0 mm in 1920 | 86 |
| March | 33.3°C24 Mar 1929 | -19.4°C12 Mar 1948 | 150 mm25 Mar 1920 | 266 mm1973 · driest 14 mm in 1956 | 89 |
| April | 36.7°C12 Apr 1972 | -8.3°C3 Apr 1936 | 86 mm30 Apr 1970 | 318 mm2017 · driest 4 mm in 1989 | 87 |
| May | 38.3°C31 May 1934 | -1.1°C9 May 1923 | 102 mm31 May 1946 | 294 mm1957 · driest 11 mm in 1998 | 87 |
| June | 41.1°C24 Jun 1933 | 6.7°C12 Jun 1985 | 137 mm22 Jun 1948 | 358 mm1935 · driest 0 mm in 1933 | 87 |
| July | 46.7°C14 Jul 1954 | 8.3°C31 Jul 1971 | 232 mm7 Jul 1958 | 478 mm1958 · driest 1 mm in 1935 | 85 |
| August | 45.6°C10 Aug 1936 | 8.3°C28 Aug 1986 | 109 mm19 Aug 2015 | 212 mm1920 · driest 4 mm in 1923 | 85 |
| September | 43.3°C3 Sep 1947 | -3.3°C29 Sep 1984 | 152 mm25 Sep 1993 | 380 mm1986 · driest 1 mm in 1948 | 89 |
| October | 37.2°C1 Oct 1953 | -10.6°C31 Oct 1993 | 126 mm16 Oct 1980 | 334 mm1919 · driest 2 mm in 1952 | 86 |
| November | 30.0°C5 Nov 1921 | -13.9°C29 Nov 1976 | 114 mm12 Nov 1985 | 282 mm1985 · driest 0 mm in 1945 | 87 |
| December | 25.6°C7 Dec 1966 | -26.1°C23 Dec 1989 | 142 mm27 Dec 2015 | 205 mm2015 · driest 0 mm in 1996 | 88 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 21 | 2 | <1 |
| February | <1 | 0 | 17 | 2 | <1 |
| March | 3 | <1 | 9 | 3 | <1 |
| April | 9 | 1 | 2 | 3 | 0 |
| May | 17 | 5 | 0 | 4 | 0 |
| June | 24 | 16 | 0 | 3 | 0 |
| July | 26 | 22 | 0 | 3 | 0 |
| August | 27 | 22 | 0 | 2 | 0 |
| September | 22 | 12 | 0 | 3 | 0 |
| October | 10 | 2 | 2 | 3 | 0 |
| November | 1 | <1 | 11 | 2 | <1 |
| December | <1 | 0 | 17 | 2 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 4% | 15% | 5% | 11% | 4.7–11.8°C |
| February | 12% | 17% | 6% | 12% | 6.9–14.9°C |
| March | 31% | 22% | 9% | 21% | 12.8–19.8°C |
| April | 52% | 26% | 11% | 26% | 19.7–24.3°C |
| May | 67% | 28% | 14% | 35% | 23.9–28.1°C |
| June | 74% | 26% | 13% | 29% | 28.6–33.3°C |
| July | 81% | 19% | 9% | 17% | 31.0–35.9°C |
| August | 82% | 19% | 9% | 15% | 30.6–36.6°C |
| September | 78% | 21% | 11% | 18% | 26.5–32.1°C |
| October | 63% | 19% | 10% | 18% | 20.6–26.5°C |
| November | 25% | 18% | 8% | 13% | 12.1–18.6°C |
| December | 5% | 15% | 6% | 12% | 6.5–12.7°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