October
October · May · September
United States · 1991–2020
October leads for comfortable weather in Antioch: typically 22.5°C by day, 10°C at night, with 85 mm of rain. Based on measured 1991–2020 NOAA station history.
October · May · September
August · September · June
October · April · November
The weakest month is January, scoring 7 against October’s 76 — days reach only 9°C, 15° 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 | 9°C | -1.1°C | 102 mm | 8.6 | 9 h 57 | 7 | Strong coverage |
| February | 11.6°C | 0.6°C | 114 mm | 8.4 | 10 h 49 | 17 | Strong coverage |
| March | 16.5°C | 4.5°C | 115 mm | 9.3 | 11 h 51 | 40 | Strong coverage |
| April | 22.1°C | 9.4°C | 120 mm | 9.3 | 13 h 03 | 66 | Strong coverage |
| May | 26.4°C | 14.6°C | 128 mm | 9.7 | 14 h 03 | 73 | Strong coverage |
| June | 30.5°C | 19.2°C | 111 mm | 8.8 | 14 h 36 | 55 | Strong coverage |
| July | 32.2°C | 21.4°C | 106 mm | 8.3 | 14 h 23 | 47 | Strong coverage |
| August | 31.9°C | 20.7°C | 96 mm | 7.4 | 13 h 31 | 51 | Strong coverage |
| September | 28.6°C | 16.7°C | 96 mm | 6.2 | 12 h 22 | 70 | Strong coverage |
| October | 22.5°C | 10°C | 85 mm | 6.7 | 11 h 12 | 76 | Strong coverage |
| November | 15.8°C | 4°C | 98 mm | 7.4 | 10 h 12 | 41 | Strong coverage |
| December | 10.7°C | 0.8°C | 112 mm | 9.3 | 9 h 43 | 14 | 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 | 25.6°C24 Jan 1972 | -27.2°C21 Jan 1985 | 97 mm31 Jan 1951 | 354 mm1950 · driest 5 mm in 1986 | 79 |
| February | 29.4°C23 Feb 2023 | -25.0°C2 Feb 1951 | 120 mm14 Feb 1989 | 342 mm2019 · driest 16 mm in 1968 | 79 |
| March | 31.7°C21 Mar 2026 | -16.7°C3 Mar 1980 | 146 mm27 Mar 2021 | 314 mm1975 · driest 30 mm in 1987 | 79 |
| April | 32.8°C26 Apr 1989 | -5.0°C7 Apr 1982 | 98 mm3 Apr 2025 | 214 mm2025 · driest 13 mm in 1986 | 79 |
| May | 35.0°C27 May 2012 | 1.1°C2 May 1963 | 184 mm2 May 2010 | 417 mm2010 · driest 21 mm in 1951 | 79 |
| June | 42.8°C29 Jun 2012 | 5.6°C1 Jun 1966 | 87 mm16 Jun 1960 | 304 mm1998 · driest 7 mm in 2012 | 79 |
| July | 41.7°C27 Jul 1952 | 12.2°C31 Jul 1965 | 85 mm5 Jul 1950 | 222 mm2021 · driest 18 mm in 1954 | 79 |
| August | 41.1°C16 Aug 2007 | 9.4°C29 Aug 1986 | 104 mm28 Aug 1963 | 211 mm2017 · driest 18 mm in 1968 | 78 |
| September | 40.6°C5 Sep 1954 | 2.2°C22 Sep 1983 | 168 mm13 Sep 1979 | 291 mm1979 · driest 1 mm in 2019 | 78 |
| October | 37.2°C3 Oct 2019 | -3.3°C22 Oct 1987 | 74 mm8 Oct 1959 | 214 mm2014 · driest 0 mm in 1963 | 78 |
| November | 31.1°C1 Nov 2016 | -18.3°C25 Nov 1950 | 107 mm30 Nov 1997 | 200 mm1948 · driest 14 mm in 1949 | 78 |
| December | 26.1°C3 Dec 1982 | -23.3°C22 Dec 1989 | 113 mm8 Dec 1978 | 346 mm1978 · driest 25 mm in 1985 | 78 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 19 | 4 | 2 |
| February | <1 | 0 | 14 | 4 | 2 |
| March | 3 | <1 | 7 | 4 | <1 |
| April | 11 | 1 | <1 | 4 | 0 |
| May | 21 | 8 | 0 | 4 | 0 |
| June | 28 | 19 | 0 | 4 | 0 |
| July | 31 | 26 | 0 | 3 | 0 |
| August | 31 | 24 | 0 | 3 | 0 |
| September | 25 | 13 | 0 | 3 | 0 |
| October | 12 | 2 | <1 | 3 | 0 |
| November | 1 | 0 | 8 | 3 | <1 |
| December | 0 | 0 | 16 | 4 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 3% | 27% | 12% | 32% | 5.2–12.3°C |
| February | 9% | 31% | 13% | 36% | 7.4–14.6°C |
| March | 24% | 31% | 13% | 38% | 13.3–19.2°C |
| April | 48% | 30% | 12% | 38% | 19.3–24.3°C |
| May | 65% | 30% | 13% | 36% | 24.2–28.4°C |
| June | 72% | 28% | 11% | 31% | 28.6–32.4°C |
| July | 72% | 28% | 11% | 30% | 30.5–34.2°C |
| August | 77% | 23% | 10% | 23% | 29.8–33.6°C |
| September | 77% | 22% | 9% | 19% | 26.5–30.7°C |
| October | 59% | 20% | 8% | 18% | 20.6–24.8°C |
| November | 21% | 25% | 11% | 27% | 13.0–18.6°C |
| December | 4% | 29% | 12% | 35% | 7.2–13.4°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