Antioch weather in August: Antioch, California: normal highs, lows, rain and records for August
Antioch in August has a normal high of 90°F and a normal low of 60°F, a daily mean of 75°F, falling from 91°F on the 1st to 89°F by the 31st. Measurable precipitation falls on 0 days in a normal August, 0.02 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 32°C and low of 16°C, 1 mm of precipitation in August.
- NOAA stationAntioch Pumping Plant #3
- Station IDUSC00040232
- Location37.98°N 121.75°W
- Elevation60 ft (18 m)
- From the center2 miles
- Population118,453
- Jan 56° 40°
- Feb 61° 44°
- Mar 67° 47°
- Apr 72° 50°
- May 79° 54°
- Jun 86° 59°
- Jul 91° 61°
- Aug 90° 60°
- Sep 87° 59°
- Oct 78° 54°
- Nov 65° 46°
- Dec 56° 40°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Antioch in August?
The normal high is 90°F and the normal low 60°F, for a daily mean of 75.2°F. August is 0.8°F cooler than July and 2.5°F warmer than September. August is the 2nd warmest month of the year in Antioch and the 11th wettest. Across the month the normal high falls 2°F, from 91°F on August 1 to 89°F on August 31. From one year to the next August's mean temperature typically moves about 1.8°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 73°F and 77°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 1%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 91°F | 61°F | 1% | 0% |
| August 8 | 91°F | 60°F | 1% | 0% |
| August 15 | 90°F | 60°F | 1% | 0% |
| August 22 | 90°F | 60°F | 1% | 0% |
| August 31 | 89°F | 60°F | 1% | 0% |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 1, coldest night August 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 91°F | 61°F | 1% | 0% | 14 h 10 min |
| August 2 | 91°F | 61°F | 1% | 0% | 14 h 10 min |
| August 3 | 91°F | 61°F | 1% | 0% | 14 h |
| August 4 | 91°F | 61°F | 1% | 0% | 14 h |
| August 5 | 91°F | 61°F | 1% | 0% | 14 h |
| August 6 | 91°F | 61°F | 1% | 0% | 14 h |
| August 7 | 91°F | 60°F | 1% | 0% | 14 h |
| August 8 | 91°F | 60°F | 1% | 0% | 14 h |
| August 9 | 91°F | 60°F | 1% | 0% | 13 h 50 min |
| August 10 | 91°F | 60°F | 1% | 0% | 13 h 50 min |
| August 11 | 91°F | 60°F | 1% | 0% | 13 h 50 min |
| August 12 | 90°F | 60°F | 1% | 0% | 13 h 50 min |
| August 13 | 90°F | 60°F | 1% | 0% | 13 h 40 min |
| August 14 | 90°F | 60°F | 1% | 0% | 13 h 40 min |
| August 15 | 90°F | 60°F | 1% | 0% | 13 h 40 min |
| August 16 | 90°F | 60°F | 1% | 0% | 13 h 40 min |
| August 17 | 90°F | 60°F | 1% | 0% | 13 h 40 min |
| August 18 | 90°F | 60°F | 1% | 0% | 13 h 30 min |
| August 19 | 90°F | 60°F | 1% | 0% | 13 h 30 min |
| August 20 | 90°F | 60°F | 1% | 0% | 13 h 30 min |
| August 21 | 90°F | 60°F | 1% | 0% | 13 h 30 min |
| August 22 | 90°F | 60°F | 1% | 0% | 13 h 30 min |
| August 23 | 90°F | 60°F | 1% | 0% | 13 h 20 min |
| August 24 | 90°F | 60°F | 1% | 0% | 13 h 20 min |
| August 25 | 90°F | 60°F | 1% | 0% | 13 h 20 min |
| August 26 | 90°F | 60°F | 1% | 0% | 13 h 20 min |
| August 27 | 90°F | 60°F | 1% | 0% | 13 h 10 min |
| August 28 | 89°F | 60°F | 1% | 0% | 13 h 10 min |
| August 29 | 89°F | 60°F | 1% | 0% | 13 h 10 min |
| August 30 | 89°F | 60°F | 1% | 0% | 13 h 10 min |
| August 31 | 89°F | 60°F | 1% | 0% | 13 h 10 min |
- Normal high
- 90°FAugust average
- Normal low
- 60°FAugust average
- Precipitation
- 0.02 inmonth total
- Days with precipitation
- fewer than 10.01 inch or more
- Days at 90°F or more
- 16
- Daylight
- 14 h 10 min to 13 h 10 minAugust 1 to August 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 30
- Sunshine
- 97%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00040232; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Antioch in August?
On a given August day the chance of 0.01 inch or more is 1% on average, highest around August 20 (1%). In all, 0.02 in falls on 0 days of a normal August.
In a normal August in Antioch, 16 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00040232.
What are the records for August in Antioch?
The warmest August temperature on this station's record (since 1955) is 109°F, on August 5, 1998; the coldest is 40°F, on August 10, 1983. The wettest August brought 0.74 in (1976).
The August mean against the 1991-2020 normal of 75.2°F: 2021 76.2°F (+1.0). 1 of 1 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 76.2°F | +1.0°F | 0.00 in |
Source: records: ACIS, station USC00040232; recent months: ACIS, station USC00040232. Records and recent months use complete months only.
How does August in Antioch compare across California?
Across the 219 places PlainClimate covers in California, August normal highs run from 63°F in Bodega to 109°F in Needles; Antioch's is 90°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.