San Jacinto weather in August: San Jacinto, California: normal highs, lows, rain and records for August
San Jacinto in August has a normal high of 97°F and a normal low of 64°F, a daily mean of 80°F, holding near 97°F all month. Measurable precipitation falls on 1 days in a normal August, 0.12 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 36°C and low of 18°C, 3 mm of precipitation in August.
- NOAA stationSan Jacinto
- Station IDUSC00047813
- Location33.80°N 116.98°W
- Elevation1,525 ft (465 m)
- From the center1 miles
- Population55,515
- Jan 66° 40°
- Feb 66° 42°
- Mar 70° 45°
- Apr 74° 48°
- May 80° 53°
- Jun 89° 58°
- Jul 95° 64°
- Aug 97° 64°
- Sep 92° 61°
- Oct 82° 53°
- Nov 73° 44°
- Dec 65° 39°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is San Jacinto in August?
The normal high is 97°F and the normal low 64°F, for a daily mean of 80.4°F. August is 1.1°F warmer than July and 4.1°F warmer than September. August is the warmest month of the year in San Jacinto and the 11th wettest. Across the month the normal high falls 1°F, from 97°F on August 1 to 96°F on August 31. From one year to the next August's mean temperature typically moves about 1.9°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 79°F and 82°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 3%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 97°F | 65°F | 2% | 1% |
| August 8 | 97°F | 65°F | 2% | 1% |
| August 15 | 97°F | 64°F | 2% | 1% |
| August 22 | 97°F | 64°F | 2% | 1% |
| August 31 | 96°F | 63°F | 3% | 1% |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 8, coldest night August 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 97°F | 65°F | 2% | 1% | 13 h 50 min |
| August 2 | 97°F | 65°F | 2% | 1% | 13 h 50 min |
| August 3 | 97°F | 65°F | 2% | 1% | 13 h 50 min |
| August 4 | 97°F | 65°F | 2% | 1% | 13 h 50 min |
| August 5 | 97°F | 65°F | 2% | 1% | 13 h 40 min |
| August 6 | 97°F | 65°F | 2% | 1% | 13 h 40 min |
| August 7 | 97°F | 65°F | 2% | 1% | 13 h 40 min |
| August 8 | 97°F | 65°F | 2% | 1% | 13 h 40 min |
| August 9 | 97°F | 65°F | 2% | 1% | 13 h 40 min |
| August 10 | 97°F | 65°F | 2% | 1% | 13 h 40 min |
| August 11 | 97°F | 65°F | 2% | 1% | 13 h 30 min |
| August 12 | 97°F | 65°F | 2% | 1% | 13 h 30 min |
| August 13 | 97°F | 65°F | 2% | 1% | 13 h 30 min |
| August 14 | 97°F | 65°F | 2% | 1% | 13 h 30 min |
| August 15 | 97°F | 64°F | 2% | 1% | 13 h 30 min |
| August 16 | 97°F | 64°F | 2% | 1% | 13 h 30 min |
| August 17 | 97°F | 64°F | 2% | 1% | 13 h 20 min |
| August 18 | 97°F | 64°F | 2% | 1% | 13 h 20 min |
| August 19 | 97°F | 64°F | 2% | 1% | 13 h 20 min |
| August 20 | 97°F | 64°F | 2% | 1% | 13 h 20 min |
| August 21 | 97°F | 64°F | 2% | 1% | 13 h 20 min |
| August 22 | 97°F | 64°F | 2% | 1% | 13 h 10 min |
| August 23 | 97°F | 64°F | 2% | 1% | 13 h 10 min |
| August 24 | 96°F | 64°F | 3% | 1% | 13 h 10 min |
| August 25 | 96°F | 64°F | 3% | 1% | 13 h 10 min |
| August 26 | 96°F | 64°F | 3% | 1% | 13 h 10 min |
| August 27 | 96°F | 64°F | 3% | 1% | 13 h |
| August 28 | 96°F | 64°F | 3% | 1% | 13 h |
| August 29 | 96°F | 64°F | 3% | 1% | 13 h |
| August 30 | 96°F | 63°F | 3% | 1% | 13 h |
| August 31 | 96°F | 63°F | 3% | 1% | 13 h |
- Normal high
- 97°FAugust average
- Normal low
- 64°FAugust average
- Precipitation
- 0.12 inmonth total
- Days with precipitation
- 10.01 inch or more
- Days at 90°F or more
- 29
- 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
- 31
- Sunshine
- 94%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00047813; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in San Jacinto in August?
On a given August day the chance of 0.01 inch or more is 2% on average, highest around August 29 (3%). In all, 0.12 in falls on 1 days of a normal August.
In a normal August in San Jacinto, 29 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00047813.
What are the records for August in San Jacinto?
The August mean against the 1991-2020 normal of 80.4°F: 2021 81.6°F (+1.2), 2022 84.8°F (+4.4), 2023 82.0°F (+1.6), 2024 82.2°F (+1.8), 2025 82.2°F (+1.8), 2026 85.6°F (+5.2). 6 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 81.6°F | +1.2°F | 0.00 in |
| 2022 | 84.8°F | +4.4°F | 0.01 in |
| 2023 | 82.0°F | +1.6°F | 1.64 in |
| 2024 | 82.2°F | +1.8°F | 0.00 in |
| 2025 | 82.2°F | +1.8°F | 0.04 in |
| 2026 | 85.6°F | +5.2°F | 0.00 in |
Source: recent months: ACIS, station USC00047813. Records and recent months use complete months only.
How does August in San Jacinto 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; San Jacinto's is 97°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- San Jacinto in July95°F by day, 64°F at night
- San Jacinto in September92°F by day, 61°F at night
- San Jacinto through the yearEvery month, frost dates, records and recent years
- California in AugustThe statewide normal and the warmest and coolest places
- Needles: California's warmest Augustnormal high 109°F