Modesto weather in August: Modesto, California: normal highs, lows, rain and records for August
Modesto in August has a normal high of 94°F and a normal low of 62°F, a daily mean of 78°F, falling from 95°F on the 1st to 92°F by the 31st. Measurable precipitation falls on 0 days in a normal August, 0.01 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 34°C and low of 17°C, 0 mm of precipitation in August.
- NOAA stationModesto City County Airport
- Station IDUSW00023258
- Location37.62°N 120.95°W
- Elevation73 ft (22 m)
- From the center3 miles
- Population220,592
- Jan 56° 39°
- Feb 62° 42°
- Mar 68° 45°
- Apr 74° 48°
- May 82° 54°
- Jun 90° 59°
- Jul 95° 63°
- Aug 94° 62°
- Sep 89° 59°
- Oct 79° 52°
- Nov 66° 43°
- Dec 56° 39°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Modesto in August?
The normal high is 94°F and the normal low 62°F, for a daily mean of 77.8°F. August is 1.0°F cooler than July and 3.9°F warmer than September. August is the 2nd warmest month of the year in Modesto and the 11th wettest. Across the month the normal high falls 3°F, from 95°F on August 1 to 92°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 76°F and 80°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 | 95°F | 63°F | 0% | 0% |
| August 8 | 94°F | 63°F | 0% | 0% |
| August 15 | 94°F | 62°F | 0% | 0% |
| August 22 | 93°F | 62°F | 0% | 0% |
| August 31 | 92°F | 61°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 | 95°F | 63°F | 0% | 0% | 14 h 10 min |
| August 2 | 95°F | 63°F | 0% | 0% | 14 h |
| August 3 | 95°F | 63°F | 0% | 0% | 14 h |
| August 4 | 95°F | 63°F | 0% | 0% | 14 h |
| August 5 | 95°F | 63°F | 0% | 0% | 14 h |
| August 6 | 94°F | 63°F | 0% | 0% | 14 h |
| August 7 | 94°F | 63°F | 0% | 0% | 14 h |
| August 8 | 94°F | 63°F | 0% | 0% | 13 h 50 min |
| August 9 | 94°F | 63°F | 0% | 0% | 13 h 50 min |
| August 10 | 94°F | 62°F | 0% | 0% | 13 h 50 min |
| August 11 | 94°F | 62°F | 0% | 0% | 13 h 50 min |
| August 12 | 94°F | 62°F | 0% | 0% | 13 h 50 min |
| August 13 | 94°F | 62°F | 0% | 0% | 13 h 40 min |
| August 14 | 94°F | 62°F | 0% | 0% | 13 h 40 min |
| August 15 | 94°F | 62°F | 0% | 0% | 13 h 40 min |
| August 16 | 94°F | 62°F | 0% | 0% | 13 h 40 min |
| August 17 | 93°F | 62°F | 0% | 0% | 13 h 40 min |
| August 18 | 93°F | 62°F | 0% | 0% | 13 h 30 min |
| August 19 | 93°F | 62°F | 0% | 0% | 13 h 30 min |
| August 20 | 93°F | 62°F | 0% | 0% | 13 h 30 min |
| August 21 | 93°F | 62°F | 0% | 0% | 13 h 30 min |
| August 22 | 93°F | 62°F | 0% | 0% | 13 h 20 min |
| August 23 | 93°F | 62°F | 1% | 0% | 13 h 20 min |
| August 24 | 93°F | 62°F | 1% | 0% | 13 h 20 min |
| August 25 | 93°F | 61°F | 1% | 0% | 13 h 20 min |
| August 26 | 93°F | 61°F | 1% | 0% | 13 h 20 min |
| August 27 | 93°F | 61°F | 1% | 0% | 13 h 10 min |
| August 28 | 92°F | 61°F | 1% | 0% | 13 h 10 min |
| August 29 | 92°F | 61°F | 1% | 0% | 13 h 10 min |
| August 30 | 92°F | 61°F | 1% | 0% | 13 h 10 min |
| August 31 | 92°F | 61°F | 1% | 0% | 13 h |
- Normal high
- 94°FAugust average
- Normal low
- 62°FAugust average
- Precipitation
- 0.01 inmonth total
- Days with precipitation
- fewer than 10.01 inch or more
- Days at 90°F or more
- 23
- Daylight
- 14 h 10 min to 13 hAugust 1 to August 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 31
- Sunshine
- 98%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00023258; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Modesto in August?
On a given August day the chance of 0.01 inch or more is 0% on average, highest around August 31 (1%). In all, 0.01 in falls on 0 days of a normal August.
In a normal August in Modesto, 23 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00023258.
What are the records for August in Modesto?
The warmest August temperature on this station's record (since 1927) is 111°F, on August 16, 2020; the coldest is 46°F, on August 30, 1957. The wettest August brought 0.74 in (1965).
The August mean against the 1991-2020 normal of 77.8°F: 2021 77.6°F (−0.2), 2022 79.7°F (+1.9), 2023 79.2°F (+1.4), 2024 79.9°F (+2.1), 2025 79.8°F (+2.0), 2026 80.1°F (+2.3). 5 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 77.6°F | −0.2°F | 0.00 in |
| 2022 | 79.7°F | +1.9°F | 0.00 in |
| 2023 | 79.2°F | +1.4°F | 0.00 in |
| 2024 | 79.9°F | +2.1°F | 0.00 in |
| 2025 | 79.8°F | +2.0°F | 0.00 in |
| 2026 | 80.1°F | +2.3°F | 0.01 in |
Source: records: ACIS, station USW00023258; recent months: ACIS, station USW00023258. Records and recent months use complete months only.
How does August in Modesto 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; Modesto's is 94°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.