Weather Guide

United States Average Monthly Weather

Weather score55Mixed annual avg

Best months: July, June, August

Across the year, average daytime temperatures are around 21°C, sunshine averages 7.8h per day, and rainfall totals about 794mm. Sea temperatures average 3°C across the year.

San Francisco, California, United States, United States travel weather guide
Photo by 12019 on Pixabay

Annual weather

Annual averages

Temp

21°C

Rain

794mm

Annual total

Sun

7.8h

Sea

3°C

Weather score

55

Mixed avg

Seasonal climate calendar

TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score

Trip feel

Mild

Average highs are around 20°C, so days are mild rather than hot.

Drier

Rainfall averages 69mm, which is relatively low for holiday planning.

Some sun

Sunshine averages 6.6h per day, enough for a balanced month.

Cool sea

Sea temperatures average 4°C, so the water can feel cool.

Map

Weather map

Compare United States with nearby places by weather score, rain, sun, temperature, and swim conditions.

Temperature

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October20°C average high

October is close to United States' yearly temperature average, giving a typical read on daytime heat.

Warmest monthsJune to September

This stretch sets the upper range for average daytime heat.

October69mm average rain

October is close to United States' usual rainfall pattern, with little seasonal change across the year.

Driest monthsJanuary to October

Rainfall stays comparatively low through the year.

October6.6 hours average sun

October is below United States' yearly sunshine average, so bright-day planning is less reliable than in peak months.

Brightest monthsMay to August

This stretch has the strongest sunshine in the monthly averages.

Sea temperature

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October4°C average sea

October sits in the warmer sea-temperature season, usually making swimming easier to enjoy.

Warmest seaJuly to October

Sea temperatures are usually near 4°C in this stretch, so swimming comfort is at its strongest.

Weather score

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October49 weather score

October sits close to United States' yearly weather-score average, giving a typical overall read on the month.

Best weather monthsJune to August

These months have the strongest weather score in the monthly averages.

Hotels near United States