Barstow weather in August: Barstow, California: normal highs, lows, rain and records for August
Barstow in August has a normal high of 104°F and a normal low of 73°F, a daily mean of 89°F, falling from 105°F on the 1st to 102°F by the 31st. Measurable precipitation falls on 1 days in a normal August, 0.20 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 40°C and low of 23°C, 5 mm of precipitation in August.
- NOAA stationBarstow Daggett Airport
- Station IDUSW00023161
- Location34.85°N 116.79°W
- Elevation1,917 ft (584 m)
- Population24,897
- Jan 61° 36°
- Feb 66° 40°
- Mar 73° 46°
- Apr 80° 51°
- May 89° 60°
- Jun 99° 68°
- Jul 105° 74°
- Aug 104° 73°
- Sep 96° 66°
- Oct 83° 54°
- Nov 70° 43°
- Dec 60° 35°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Barstow in August?
The normal high is 104°F and the normal low 73°F, for a daily mean of 88.5°F. August is 1.1°F cooler than July and 7.4°F warmer than September. August is the 2nd warmest month of the year in Barstow and the 9th wettest. Across the month the normal high falls 3°F, from 105°F on August 1 to 102°F on August 31. From one year to the next August's mean temperature typically moves about 1.6°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 87°F and 90°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 5%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 105°F | 75°F | 5% | 2% |
| August 8 | 105°F | 74°F | 4% | 2% |
| August 15 | 104°F | 73°F | 4% | 2% |
| August 22 | 103°F | 72°F | 4% | 2% |
| August 31 | 102°F | 71°F | 4% | 2% |
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 | 105°F | 75°F | 5% | 2% | 13 h 50 min |
| August 2 | 105°F | 75°F | 5% | 2% | 13 h 50 min |
| August 3 | 105°F | 75°F | 5% | 2% | 13 h 50 min |
| August 4 | 105°F | 75°F | 5% | 2% | 13 h 50 min |
| August 5 | 105°F | 75°F | 5% | 2% | 13 h 50 min |
| August 6 | 105°F | 74°F | 4% | 2% | 13 h 50 min |
| August 7 | 105°F | 74°F | 4% | 2% | 13 h 40 min |
| August 8 | 105°F | 74°F | 4% | 2% | 13 h 40 min |
| August 9 | 105°F | 74°F | 4% | 2% | 13 h 40 min |
| August 10 | 105°F | 74°F | 4% | 2% | 13 h 40 min |
| August 11 | 105°F | 74°F | 4% | 2% | 13 h 40 min |
| August 12 | 105°F | 74°F | 4% | 2% | 13 h 40 min |
| August 13 | 105°F | 74°F | 4% | 2% | 13 h 30 min |
| August 14 | 104°F | 74°F | 4% | 2% | 13 h 30 min |
| August 15 | 104°F | 73°F | 4% | 2% | 13 h 30 min |
| August 16 | 104°F | 73°F | 4% | 2% | 13 h 30 min |
| August 17 | 104°F | 73°F | 4% | 2% | 13 h 30 min |
| August 18 | 104°F | 73°F | 4% | 2% | 13 h 20 min |
| August 19 | 104°F | 73°F | 4% | 2% | 13 h 20 min |
| August 20 | 104°F | 73°F | 4% | 2% | 13 h 20 min |
| August 21 | 104°F | 73°F | 4% | 2% | 13 h 20 min |
| August 22 | 103°F | 72°F | 4% | 2% | 13 h 20 min |
| August 23 | 103°F | 72°F | 4% | 2% | 13 h 10 min |
| August 24 | 103°F | 72°F | 4% | 2% | 13 h 10 min |
| August 25 | 103°F | 72°F | 4% | 2% | 13 h 10 min |
| August 26 | 103°F | 72°F | 4% | 2% | 13 h 10 min |
| August 27 | 102°F | 72°F | 4% | 2% | 13 h 10 min |
| August 28 | 102°F | 71°F | 4% | 2% | 13 h |
| August 29 | 102°F | 71°F | 4% | 2% | 13 h |
| August 30 | 102°F | 71°F | 4% | 2% | 13 h |
| August 31 | 102°F | 71°F | 4% | 2% | 13 h |
- Normal high
- 104°FAugust average
- Normal low
- 73°FAugust average
- Precipitation
- 0.20 inmonth total
- Days with precipitation
- 10.01 inch or more
- Days at 90°F or more
- 31
- 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 USW00023161; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Barstow in August?
On a given August day the chance of 0.01 inch or more is 4% on average, highest around August 1 (5%). In all, 0.20 in falls on 1 days of a normal August.
In a normal August in Barstow, 31 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00023161.
How humid and windy is Barstow in August?
At 3 p.m. the normal temperature is 100°F with 14% relative humidity and a dew point of 42°F; at 6 a.m. it is 73°F with 36% humidity. The wind averages 10.2 mph, most often from the west in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 73°F | 45°F | 36% | 9.2 mph | 93% |
| 9 a.m. | 87°F | 45°F | 23% | 9.4 mph | 92% |
| noon | 97°F | 43°F | 16% | 8.3 mph | 91% |
| 3 p.m. | 100°F | 42°F | 14% | 10.4 mph | 85% |
| 6 p.m. | 95°F | 42°F | 16% | 12.4 mph | 87% |
| 9 p.m. | 86°F | 44°F | 23% | 11.6 mph | 90% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00023161. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for August in Barstow?
The warmest August temperature on this station's record (since 1943) is 117°F, on August 2, 1986; the coldest is 55°F, on August 31, 1953. The wettest August brought 3.22 in (1958).
The August mean against the 1991-2020 normal of 88.5°F: 2021 90.3°F (+1.8), 2022 91.8°F (+3.3), 2023 87.5°F (−1.0), 2024 89.7°F (+1.2), 2025 89.2°F (+0.7), 2026 92.6°F (+4.1). 5 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 90.3°F | +1.8°F | 0.00 in |
| 2022 | 91.8°F | +3.3°F | 0.82 in |
| 2023 | 87.5°F | −1.0°F | 0.10 in |
| 2024 | 89.7°F | +1.2°F | 0.09 in |
| 2025 | 89.2°F | +0.7°F | 0.78 in |
| 2026 | 92.6°F | +4.1°F | 0.17 in |
Source: records: ACIS, station USW00023161; recent months: ACIS, station USW00023161. Records and recent months use complete months only.
How does August in Barstow 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; Barstow's is 104°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.