Fairfield weather in August: Fairfield, California: normal highs, lows, rain and records for August
Fairfield in August has a normal high of 89°F and a normal low of 58°F, a daily mean of 74°F, holding near 89°F all month. Measurable precipitation falls on 0 days in a normal August, 0.03 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 32°C and low of 14°C, 1 mm of precipitation in August.
- NOAA stationFairfield
- Station IDUSC00042934
- Location38.27°N 122.07°W
- Elevation40 ft (12 m)
- Population122,646
- Jan 57° 40°
- Feb 62° 43°
- Mar 66° 45°
- Apr 71° 48°
- May 78° 52°
- Jun 85° 56°
- Jul 90° 58°
- Aug 89° 58°
- Sep 87° 57°
- Oct 78° 52°
- Nov 66° 45°
- Dec 57° 40°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Fairfield in August?
The normal high is 89°F and the normal low 58°F, for a daily mean of 73.6°F. August is 0.2°F cooler than July and 1.9°F warmer than September. August is the 2nd warmest month of the year in Fairfield and the 11th wettest. From one year to the next August's mean temperature typically moves about 1.7°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 72°F and 75°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 | 89°F | 58°F | 0% | 0% |
| August 8 | 89°F | 58°F | 1% | 0% |
| August 15 | 89°F | 58°F | 1% | 0% |
| August 22 | 89°F | 58°F | 1% | 0% |
| August 31 | 89°F | 58°F | 1% | 0% |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 1, coldest night August 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 89°F | 58°F | 0% | 0% | 14 h 10 min |
| August 2 | 89°F | 58°F | 1% | 0% | 14 h 10 min |
| August 3 | 89°F | 58°F | 1% | 0% | 14 h 10 min |
| August 4 | 89°F | 58°F | 1% | 0% | 14 h |
| August 5 | 89°F | 58°F | 1% | 0% | 14 h |
| August 6 | 89°F | 58°F | 1% | 0% | 14 h |
| August 7 | 89°F | 58°F | 1% | 0% | 14 h |
| August 8 | 89°F | 58°F | 1% | 0% | 14 h |
| August 9 | 89°F | 58°F | 1% | 0% | 13 h 50 min |
| August 10 | 89°F | 58°F | 1% | 0% | 13 h 50 min |
| August 11 | 89°F | 58°F | 1% | 0% | 13 h 50 min |
| August 12 | 89°F | 58°F | 1% | 0% | 13 h 50 min |
| August 13 | 89°F | 58°F | 1% | 0% | 13 h 50 min |
| August 14 | 89°F | 58°F | 1% | 0% | 13 h 40 min |
| August 15 | 89°F | 58°F | 1% | 0% | 13 h 40 min |
| August 16 | 89°F | 58°F | 1% | 0% | 13 h 40 min |
| August 17 | 89°F | 58°F | 1% | 0% | 13 h 40 min |
| August 18 | 89°F | 58°F | 1% | 0% | 13 h 40 min |
| August 19 | 89°F | 58°F | 1% | 0% | 13 h 30 min |
| August 20 | 89°F | 58°F | 1% | 0% | 13 h 30 min |
| August 21 | 89°F | 58°F | 1% | 0% | 13 h 30 min |
| August 22 | 89°F | 58°F | 1% | 0% | 13 h 30 min |
| August 23 | 89°F | 58°F | 1% | 0% | 13 h 20 min |
| August 24 | 89°F | 58°F | 1% | 0% | 13 h 20 min |
| August 25 | 89°F | 58°F | 1% | 0% | 13 h 20 min |
| August 26 | 89°F | 58°F | 1% | 0% | 13 h 20 min |
| August 27 | 89°F | 58°F | 1% | 0% | 13 h 10 min |
| August 28 | 89°F | 58°F | 1% | 0% | 13 h 10 min |
| August 29 | 89°F | 58°F | 1% | 0% | 13 h 10 min |
| August 30 | 89°F | 58°F | 1% | 0% | 13 h 10 min |
| August 31 | 89°F | 58°F | 1% | 0% | 13 h 10 min |
- Normal high
- 89°FAugust average
- Normal low
- 58°FAugust average
- Precipitation
- 0.03 inmonth total
- Days with precipitation
- fewer than 10.01 inch or more
- Days at 90°F or more
- 15
- 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
- 28
- Sunshine
- 94%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00042934; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Fairfield in August?
On a given August day the chance of 0.01 inch or more is 1% on average, highest around August 30 (1%). In all, 0.03 in falls on 0 days of a normal August.
In a normal August in Fairfield, 15 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00042934.
What are the records for August in Fairfield?
The warmest August temperature on this station's record (since 1950) is 111°F, on August 5, 1998; the coldest is 35°F, on August 15, 1986. The wettest August brought 1.18 in (1968).
The August mean against the 1991-2020 normal of 73.6°F: 2021 74.3°F (+0.7), 2022 75.2°F (+1.6), 2023 75.8°F (+2.2), 2024 75.3°F (+1.7), 2025 75.8°F (+2.2), 2026 75.7°F (+2.1). 6 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 74.3°F | +0.7°F | 0.00 in |
| 2022 | 75.2°F | +1.6°F | 0.00 in |
| 2023 | 75.8°F | +2.2°F | 0.00 in |
| 2024 | 75.3°F | +1.7°F | 0.00 in |
| 2025 | 75.8°F | +2.2°F | 0.00 in |
| 2026 | 75.7°F | +2.1°F | 0.00 in |
Source: records: ACIS, station USC00042934; recent months: ACIS, station USC00042934. Records and recent months use complete months only.
How does August in Fairfield 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; Fairfield's is 89°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.