Fallbrook weather in August: Fallbrook, California: normal highs, lows, rain and records for August
Fallbrook in August has a normal high of 89°F and a normal low of 62°F, a daily mean of 76°F, holding near 89°F all month. Measurable precipitation falls on 1 days in a normal August, 0.22 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 32°C and low of 17°C, 6 mm of precipitation in August.
- NOAA stationFallbrook (5 mi NE)
- Station IDUSW00053151
- Location33.44°N 117.19°W
- Elevation1,140 ft (348 m)
- From the center5 miles
- Population (census place)32,467
- Jan 68° 47°
- Feb 67° 46°
- Mar 70° 48°
- Apr 72° 51°
- May 75° 53°
- Jun 81° 56°
- Jul 87° 60°
- Aug 89° 62°
- Sep 88° 62°
- Oct 83° 58°
- Nov 74° 52°
- Dec 67° 46°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Fallbrook in August?
The normal high is 89°F and the normal low 62°F, for a daily mean of 75.5°F. August is 1.9°F warmer than July and 0.7°F warmer than September. August is the warmest month of the year in Fallbrook and the 9th wettest. Across the month the normal high rises 1°F, from 89°F on August 1 to 90°F on August 31. From one year to the next August's mean temperature typically moves about 1.4°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 74°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 6%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 89°F | 61°F | 6% | 2% |
| August 8 | 89°F | 61°F | 5% | 2% |
| August 15 | 89°F | 62°F | 5% | 1% |
| August 22 | 90°F | 62°F | 5% | 1% |
| August 31 | 90°F | 63°F | 5% | 1% |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 22, coldest night August 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 89°F | 61°F | 6% | 2% | 13 h 50 min |
| August 2 | 89°F | 61°F | 6% | 2% | 13 h 50 min |
| August 3 | 89°F | 61°F | 6% | 2% | 13 h 50 min |
| August 4 | 89°F | 61°F | 6% | 2% | 13 h 40 min |
| August 5 | 89°F | 61°F | 6% | 2% | 13 h 40 min |
| August 6 | 89°F | 61°F | 6% | 2% | 13 h 40 min |
| August 7 | 89°F | 61°F | 5% | 2% | 13 h 40 min |
| August 8 | 89°F | 61°F | 5% | 2% | 13 h 40 min |
| August 9 | 89°F | 61°F | 5% | 1% | 13 h 40 min |
| August 10 | 89°F | 61°F | 5% | 1% | 13 h 30 min |
| August 11 | 89°F | 62°F | 5% | 1% | 13 h 30 min |
| August 12 | 89°F | 62°F | 5% | 1% | 13 h 30 min |
| August 13 | 89°F | 62°F | 5% | 1% | 13 h 30 min |
| August 14 | 89°F | 62°F | 5% | 1% | 13 h 30 min |
| August 15 | 89°F | 62°F | 5% | 1% | 13 h 30 min |
| August 16 | 89°F | 62°F | 5% | 1% | 13 h 20 min |
| August 17 | 90°F | 62°F | 5% | 1% | 13 h 20 min |
| August 18 | 90°F | 62°F | 5% | 1% | 13 h 20 min |
| August 19 | 90°F | 62°F | 5% | 1% | 13 h 20 min |
| August 20 | 90°F | 62°F | 5% | 1% | 13 h 20 min |
| August 21 | 90°F | 62°F | 5% | 1% | 13 h 10 min |
| August 22 | 90°F | 62°F | 5% | 1% | 13 h 10 min |
| August 23 | 90°F | 62°F | 5% | 1% | 13 h 10 min |
| August 24 | 90°F | 62°F | 5% | 1% | 13 h 10 min |
| August 25 | 90°F | 62°F | 4% | 1% | 13 h 10 min |
| August 26 | 90°F | 62°F | 4% | 1% | 13 h 10 min |
| August 27 | 90°F | 62°F | 4% | 1% | 13 h |
| August 28 | 90°F | 63°F | 4% | 1% | 13 h |
| August 29 | 90°F | 63°F | 4% | 1% | 13 h |
| August 30 | 90°F | 63°F | 4% | 1% | 13 h |
| August 31 | 90°F | 63°F | 5% | 1% | 13 h |
- Normal high
- 89°FAugust average
- Normal low
- 62°FAugust average
- Precipitation
- 0.22 inmonth total
- Days with precipitation
- 10.01 inch or more
- Days at 90°F or more
- 14
- Daylight
- 13 h 50 min to 13 hAugust 1 to August 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 30
- Sunshine
- 92%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00053151; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Fallbrook in August?
On a given August day the chance of 0.01 inch or more is 5% on average, highest around August 1 (6%). In all, 0.22 in falls on 1 days of a normal August.
In a normal August in Fallbrook, 14 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00053151.
What are the records for August in Fallbrook?
The August mean against the 1991-2020 normal of 75.5°F: 2021 75.8°F (+0.3), 2022 78.1°F (+2.6), 2023 76.1°F (+0.6), 2024 76.8°F (+1.3), 2025 76.9°F (+1.4), 2026 80.5°F (+5.0). 6 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 75.8°F | +0.3°F | 0.07 in |
| 2022 | 78.1°F | +2.6°F | 0.00 in |
| 2023 | 76.1°F | +0.6°F | 0.02 in |
| 2024 | 76.8°F | +1.3°F | 0.00 in |
| 2025 | 76.9°F | +1.4°F | 0.03 in |
| 2026 | 80.5°F | +5.0°F | 0.00 in |
Source: recent months: ACIS, station USW00053151. Records and recent months use complete months only.
How does August in Fallbrook 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; Fallbrook's is 89°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.