Mount Shasta weather in August: Mount Shasta, California: normal highs, lows, rain and records for August
Mount Shasta in August has a normal high of 85°F and a normal low of 50°F, a daily mean of 67°F, falling from 86°F on the 1st to 83°F by the 31st. Measurable precipitation falls on 2 days in a normal August, 0.20 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 29°C and low of 10°C, 5 mm of precipitation in August.
- NOAA stationMount Shasta
- Station IDUSW00024215
- Location41.33°N 122.33°W
- Elevation3,535 ft (1,078 m)
- From the center1 miles
- Population3,124
- Jan 44° 29°
- Feb 47° 29°
- Mar 53° 32°
- Apr 59° 35°
- May 69° 41°
- Jun 76° 47°
- Jul 85° 52°
- Aug 85° 50°
- Sep 78° 45°
- Oct 65° 38°
- Nov 51° 31°
- Dec 42° 28°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Mount Shasta in August?
The normal high is 85°F and the normal low 50°F, for a daily mean of 67.3°F. August is 1.1°F cooler than July and 5.8°F warmer than September. August is the 2nd warmest month of the year in Mount Shasta and the 12th wettest. Across the month the normal high falls 3°F, from 86°F on August 1 to 83°F on August 31. From one year to the next August's mean temperature typically moves about 2.0°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 65°F and 69°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 7%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 86°F | 52°F | 6% | 3% |
| August 8 | 86°F | 51°F | 6% | 2% |
| August 15 | 85°F | 50°F | 6% | 2% |
| August 22 | 84°F | 49°F | 6% | 2% |
| August 31 | 83°F | 48°F | 7% | 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 | 86°F | 52°F | 6% | 3% | 14 h 20 min |
| August 2 | 86°F | 52°F | 6% | 3% | 14 h 20 min |
| August 3 | 86°F | 52°F | 6% | 3% | 14 h 20 min |
| August 4 | 86°F | 52°F | 6% | 3% | 14 h 20 min |
| August 5 | 86°F | 52°F | 6% | 3% | 14 h 20 min |
| August 6 | 86°F | 51°F | 6% | 3% | 14 h 10 min |
| August 7 | 86°F | 51°F | 6% | 2% | 14 h 10 min |
| August 8 | 86°F | 51°F | 6% | 2% | 14 h 10 min |
| August 9 | 86°F | 51°F | 6% | 2% | 14 h 10 min |
| August 10 | 85°F | 51°F | 6% | 2% | 14 h |
| August 11 | 85°F | 51°F | 6% | 2% | 14 h |
| August 12 | 85°F | 51°F | 6% | 2% | 14 h |
| August 13 | 85°F | 50°F | 6% | 2% | 14 h |
| August 14 | 85°F | 50°F | 6% | 2% | 14 h |
| August 15 | 85°F | 50°F | 6% | 2% | 13 h 50 min |
| August 16 | 85°F | 50°F | 6% | 2% | 13 h 50 min |
| August 17 | 85°F | 50°F | 6% | 2% | 13 h 50 min |
| August 18 | 84°F | 50°F | 6% | 2% | 13 h 50 min |
| August 19 | 84°F | 50°F | 6% | 2% | 13 h 40 min |
| August 20 | 84°F | 49°F | 6% | 2% | 13 h 40 min |
| August 21 | 84°F | 49°F | 6% | 2% | 13 h 40 min |
| August 22 | 84°F | 49°F | 6% | 2% | 13 h 40 min |
| August 23 | 84°F | 49°F | 6% | 2% | 13 h 30 min |
| August 24 | 84°F | 49°F | 6% | 2% | 13 h 30 min |
| August 25 | 84°F | 49°F | 6% | 2% | 13 h 30 min |
| August 26 | 83°F | 48°F | 6% | 2% | 13 h 30 min |
| August 27 | 83°F | 48°F | 6% | 2% | 13 h 20 min |
| August 28 | 83°F | 48°F | 6% | 2% | 13 h 20 min |
| August 29 | 83°F | 48°F | 6% | 2% | 13 h 20 min |
| August 30 | 83°F | 48°F | 6% | 2% | 13 h 20 min |
| August 31 | 83°F | 48°F | 7% | 2% | 13 h 10 min |
- Normal high
- 85°FAugust average
- Normal low
- 50°FAugust average
- Precipitation
- 0.20 inmonth total
- Days with precipitation
- 20.01 inch or more
- Days at 90°F or more
- 9
- Daylight
- 14 h 20 min to 13 h 10 minAugust 1 to August 31
- Days at 70°F or more
- 30
- Days at 80°F or more
- 27
- Sunshine
- 94%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024215; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Mount Shasta in August?
On a given August day the chance of 0.01 inch or more is 6% on average, highest around August 31 (7%). In all, 0.20 in falls on 2 days of a normal August.
In a normal August in Mount Shasta, 9 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024215.
How humid and windy is Mount Shasta in August?
At 3 p.m. the normal temperature is 81°F with 25% relative humidity and a dew point of 42°F; at 6 a.m. it is 49°F with 70% humidity. The wind averages 2.6 mph, most often from the west-northwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 49°F | 40°F | 70% | 1.6 mph | – |
| 9 a.m. | 69°F | 46°F | 44% | 2.9 mph | – |
| noon | 79°F | 44°F | 29% | 3.7 mph | – |
| 3 p.m. | 81°F | 42°F | 25% | 3.7 mph | – |
| 6 p.m. | 74°F | 42°F | 31% | 2.5 mph | – |
| 9 p.m. | 62°F | 41°F | 47% | 2.5 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024215. 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 Mount Shasta?
The warmest August temperature on Mount Shasta's official record (since 1948) is 105°F, on August 7, 1981; the coldest is 34°F, on August 23, 1960. The wettest August brought 2.55 in (1976).
The August mean against the 1991-2020 normal of 67.3°F: 2021 70.3°F (+3.0), 2022 72.6°F (+5.3), 2023 70.1°F (+2.8), 2024 67.8°F (+0.5), 2025 69.4°F (+2.1), 2026 69.3°F (+2.0). 6 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 70.3°F | +3.0°F | 0.00 in |
| 2022 | 72.6°F | +5.3°F | 1.15 in |
| 2023 | 70.1°F | +2.8°F | 0.69 in |
| 2024 | 67.8°F | +0.5°F | 0.95 in |
| 2025 | 69.4°F | +2.1°F | 0.38 in |
| 2026 | 69.3°F | +2.0°F | 0.00 in |
Source: records: ACIS, NWS threaded record MHSthr; recent months: ACIS, station USW00024215. Records and recent months use complete months only.
How does August in Mount Shasta 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; Mount Shasta's is 85°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Mount Shasta in July85°F by day, 52°F at night
- Mount Shasta in September78°F by day, 45°F at night
- Mount Shasta 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