United States weather in August
United States in August averages 25°C (77°F) and 88 mm of rain.
Of the twelve months in United States, August is the second warmest and the fourth wettest.
- Average temp
- 25°C (77°F)
19–31°C · 65–88°F
- Rainfall
- 88 mm
Showers likely
- Sunshine
- —
- Wind
- 14 km/h
What is United States like in August?
Daytime
Days are warm, typically in the mid-20s°C or above.
Rain
Some rain is likely; pack for showers.
Evening
Evenings stay warm.
What should I pack for United States in August?
High-factor sun cream
With daytime highs around 31°C, burn time is short even in shade.
Sunglasses and a brimmed hat
Midday glare is the part people underpack for, not the heat itself.
Loose cotton or linen
Synthetics stop working once you are sweating through them all day.
A refillable water bottle
Daily highs this warm need roughly double the water a temperate day does.
A light rain jacket
About 88 mm falls this month — showers rather than washouts.
A layer for the evening
The day swings about 12°C between its low and its high.
August compared with July and September
August in United States is 1.4°C cooler than July and 15 mm drier than it, which averages 26°C (79°F).
August in United States is 4.4°C warmer than September and 15 mm wetter than it, which averages 20°C (69°F).
Daylight in United States in August
On 15 August the sun is up for 13 hours 43 minutes in United States, rising about 06:46 and setting about 20:29 local time.
August ends 1 hour 9 minutes shorter than it begins, so the last week of the month is a different length of day from the first.
That is 1 hour 16 minutes short of June, the longest-lit month here.
Travel guides for United States
What to read before you book.
United States weather by month
TemperatureRainfall
How August compares with the rest of the year
August is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | -2°C / 29°F | 17 mm |
| February | 1°C / 33°F | 20 mm |
| March | 6°C / 44°F | 39 mm |
| April | 12°C / 53°F | 64 mm |
| May | 18°C / 64°F | 112 mm |
| June | 24°C / 74°F | 96 mm |
| July | 26°C / 79°F | 102 mm |
| August | 25°C / 77°F | 88 mm |
| September | 20°C / 69°F | 72 mm |
| October | 13°C / 56°F | 50 mm |
| November | 6°C / 42°F | 29 mm |
| December | 0°C / 32°F | 26 mm |
Similar weather in August
Other destinations whose August averages sit close to this one.
Check another month
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FAQs about United States in August
August climate averages for United States, 1991–2020.
United States averages 25°C (77°F) in August, ranging from about 19°C (65°F) at night to 31°C (88°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Some. About 88 mm falls across August, enough to need a light jacket but not enough to reshape a trip.
Yes. August averages 25°C (77°F) against 20°C (69°F) in September — 4.4°C warmer.
August is 1.4°C cooler than July, and 15 mm drier.
Yes. August falls inside the most comfortable stretch of the year here, May to October, on temperature and rainfall together.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what August is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 13 hours 43 minutes of daylight in mid-August, against 14 hours 59 minutes in June and 9 hours 22 minutes in December.
On 15 August, sunrise is about 06:46 and sunset about 20:29 local time. Both shift across the month — the month ends 1 hour 9 minutes shorter than it starts.
