Modesto, CA weather in August
In August, Modesto sees highs around 94°F and lows around 62°F: hot and dry. Rain is rare. It is one of the warmest months in Modesto. Plan outdoor time for mornings and evenings.
- Normal high
- 94°F
- Normal low
- 62°F
- Wet days
- 0
- 0.01 in total
- Muggy days
- 0
- dew point 65°F+
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 95°F | 92°F |
| Normal low | 63°F | 61°F |
| Chance of a wet day | 0% | 1% |
| Sunrise / sunset | 6:07 am / 8:12 pm | 6:33 am / 7:35 pm |
| Daylight | 14.1 h | 13.0 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Pacific Time).
A typical August day
- 6 am62°Fdew point 53°F
- 9 am75°Fdew point 54°F
- Noon86°Fdew point 54°F
- 3 pm92°Fdew point 52°F
- 6 pm87°Fdew point 52°F
- 9 pm74°Fdew point 53°F
NOAA hourly normals (local standard time) from Stockton Metro Airport (21 mi away); average wind 8 mph; clear or few clouds in 97% of daytime hours, mostly cloudy or overcast in 2%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F0 of 31
- Hot dayshigh 90°F or more23 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow0 of 31
- Notable rainat least 0.10 in0 of 31
- Freezing nightslow 32°F or below0 of 31
Average days per August, counted from daily records for each year 1991-2020.
Rain in August
Normal precipitation is 0.01 in; a dry August brings about 0.0 in and a wet one about 0.0 in (25th and 75th percentiles). Days with half an inch or more are rare.
How August varies from year to year
- Warmest August, 1991-20202017: average high 97°F
- Coolest August1991: average high 88°F
- Wettest August1991: 0.2 in
- Driest August1992: no measurable precipitation
- Highest reading111°F (August 16, 2020)
- Lowest reading52°F (August 28, 2010)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
August compared with July and September
| July | August | September | |
|---|---|---|---|
| Normal high | 95°F | 94°F | 89°F |
| Normal low | 63°F | 62°F | 59°F |
| Wet days | 0 | 0 | 0 |
| Comfortable days | 0 | 0 | 4 |
| Daylight | 14.5 h | 13.6 h | 12.4 h |
Highs change by -1°F from July and -5°F into September.
Nearby alternatives in August
- Warmer: Furnace Creek, CA242 mi · high 116°F · 1 wet day
- Cooler: San Jose, CA53 mi · high 81°F · 0 wet days
How Modesto ranks in August
- Normal high71st warmest of 378 cities; 19th of 60 in California
- Wet days11th driest of 378
- Comfortable days213th most of 341
What to pack for Modesto in August
- Light, breathable clothing – highs near 94°F
- Layers – afternoons near 94°F but nights near 62°F
Heating and cooling
August has 0 heating degree days and 395 cooling degree days (base 65°F), 10% of the year's total heating and cooling demand.
Questions
How hot is Modesto in August?
The normal high is 94°F and the normal low is 62°F. From 1991 to 2020 the hottest August reading was 111°F (August 16, 2020).
Does it rain a lot in Modesto in August?
About 0 days in August have at least 0.01 in of precipitation, and the normal total is 0.01 in. The wettest August in 1991-2020 was in 1991 (0.2 in); the driest was in 1992, with no measurable precipitation.
Is August a good time to visit Modesto?
August ranks 12th of 12 months on our comfort score for Modesto (42 out of 100). It has almost no comfortable days and about 23 days at 90°F or hotter. The best month is April.
Where the numbers come from
- Temperature, rain and frost dates: Modesto City Co Airport (USW00023258), 2.7 mi ESE of the city center, 73 ft . NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Turlock #2 (USC00049073), 13 mi SE of the city center, 103 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour and cloud cover: Stockton Metro Airport (USW00023237), 21 mi NW of the city center, 26 ft (62 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Mdsto Cty-Co H Sham Fd Apt (724926-23258), 2.5 mi ESE of the city center, 87 ft . Hourly observations, 1991-2020.