Climate averages 1991–2020
Antioch weather
in January.
A cool, wet month: the 11th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a cool month in Antioch: daytime highs average 13.9°C and nights cool to about 5.9°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 93 mm of rain on roughly 9 days, which makes January a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 9 h 51 min on an average January day.
The nearest other city in this atlas is Concord (California), United States (20 km away). In January its highs average 13.9°C, about as warm as Antioch, with 93 mm of rain.
Among the 498 cities listed in the United States, Antioch ranks joint 171st of 498 for the warmest January highs and joint 380th of 498 for the driest January (rainfall, lowest first). The mean January high of those 498 cities is 9.5°C; Antioch is 4.4°C warmer than that mean.
From January to February, average highs rise by 1.8°C to 15.7°C, and monthly rainfall falls from 93 mm to 91 mm.
The annual picture
January in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Antioch climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 13.9°C5.9°C | 5.9°C | 93 | 9.0 | 9.810 h |
| February | 15.7°C6.8°C | 6.8°C | 91 | 8.9 | 10.811 h |
| March | 18.0°C8.1°C | 8.1°C | 69 | 8.3 | 11.912 h |
| April | 20.9°C9.4°C | 9.4°C | 31 | 4.7 | 13.213 h |
| May | 24.7°C11.9°C | 11.9°C | 16 | 3.0 | 14.214 h |
| June | 28.5°C14.0°C | 14.0°C | 3.6 | 0.7 | 14.815 h |
| July | 30.2°C15.1°C | 15.1°C | 0.4 | 0.2 | 14.515 h |
| August | 30.0°C15.4°C | 15.4°C | 1.5 | 0.2 | 13.614 h |
| September | 28.8°C14.8°C | 14.8°C | 1.2 | 0.3 | 12.512 h |
| October | 24.4°C12.8°C | 12.8°C | 22 | 2.8 | 11.211 h |
| November | 17.9°C9.1°C | 9.1°C | 45 | 5.4 | 10.210 h |
| December | 13.7°C6.3°C | 6.3°C | 87 | 8.4 | 9.610 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- Concord (California), United States in JanuaryUnited States · 20 kmHigh 13.9°C · Low 5.6°C · 93 mm rain
- San Ramon in JanuaryUnited States · 29 kmHigh 13.8°C · Low 5.3°C · 89 mm rain
- Fairfield in JanuaryUnited States · 34 kmHigh 13.7°C · Low 5.4°C · 109 mm rain
- Livermore in JanuaryUnited States · 36 kmHigh 13.9°C · Low 5.3°C · 86 mm rain
- Pleasanton in JanuaryUnited States · 39 kmHigh 14.1°C · Low 5.5°C · 86 mm rain
- Vallejo in JanuaryUnited States · 41 kmHigh 14.0°C · Low 5.1°C · 101 mm rain
- Vacaville in JanuaryUnited States · 42 kmHigh 14.0°C · Low 5.4°C · 109 mm rain
- Berkeley in JanuaryUnited States · 44 kmHigh 13.7°C · Low 5.4°C · 93 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Antioch) is explained once on the Antioch year overview and on the Sources, method and limits page.