California, United States Weather

  1. California, United States Weather
  2. Current conditions
  3. Weather forecast
  4. Averages and extremes
  5. Yesterday's Data
  6. Temperature and possibility of rain in California over the next 12 hours
  7. Temperature and possibility of rain in California in the coming days
  8. Rainfall in California in the coming days
  9. California Weather Summary
  10. Weather averages by month
  11. California's weather
  12. Frequently asked questions
  13. Comments
California, Weather
(Photo by Yu Kato on Unsplash)

Current conditions

Updated:
21°C
69.8°F
°C °F

Condition: Clear Sky

Pressure: 998 hPa

Feel like: 19 °C

Temperature: 21°C

Cloud: 0%

Humidity: 37%

Wind: ESE - 5 km/h

Visibility: 52.4 km

Weather forecast

Sun
20 Sep
19°C / 34°C
Overcast
Mon
21 Sep
16°C / 29°C
Overcast
Tue
22 Sep
14°C / 34°C
Partly Cloudy
Wed
23 Sep
17°C / 37°C
Mainly Clear
Thu
24 Sep
17°C / 38°C
Overcast
Hourly forecast today:
05:00 AM
5° / 21°
5° / 21°
Clear Sky
37% 5 km/h
06:00 AM
5° / 20°
5° / 20°
Clear Sky
37% 5 km/h
07:00 AM
5° / 19°
5° / 19°
Clear Sky
40% 2 km/h
08:00 AM
5° / 19°
5° / 19°
Clear Sky
40% 3 km/h
09:00 AM
6° / 17°
6° / 17°
Clear Sky
46% 4 km/h
10:00 AM
5° / 17°
5° / 17°
Clear Sky
46% 5 km/h
11:00 AM
5° / 17°
5° / 17°
Clear Sky
45% 6 km/h
12:00 PM
5° / 17°
5° / 17°
Clear Sky
44% 7 km/h
13:00 PM
5° / 17°
5° / 17°
Clear Sky
44% 10 km/h
14:00 PM
5° / 17°
5° / 17°
Clear Sky
44% 9 km/h
15:00 PM
6° / 18°
6° / 18°
Clear Sky
45% 8 km/h

30 Day Averages and Extremes

  • Average high 33.23°C
  • Average low 16.73°C
  • Hottest day 39°C (10 September 2026)
  • Coldest day 11°C (18 September 2026)
  • Average humidity 35.03%
  • Days with precipitation 4 days
  • Highest precipitation 3 mm (27 September 2026)

Yesterday's Data

  • Max: 28°C
  • Min: 11°C
  • Total Precipitation: 0 mm

Temperature and possibility of rain in California over the next 12 hours

Temperature and possibility of rain in California in the coming days

Rainfall in California in the coming days

California Climate Summary

California features a Mediterranean, hot summer (Köppen classification: Csa), with an average annual temperature of 19.97ºC (67.95ºF), which is about 7.33% higher than the national average for United States. Annually, the city experiences approximately 30.48 millimeters (1.2 inches) of rainfall, spread across 46.1 rainy days, accounting for 12.63% of the year.

Longitude 36.778261
Latitude -119.4179324
Yearly high temperature 24.61ºC (76.3ºF)
Yearly low temperature 11.65ºC (52.97ºF)
Hottest month September 33.37ºC (92.07ºF)
Coldest month January 5.55ºC (41.99ºF)
Yearly precip 30.48mm (1.2in)
Days with rainfall 46.1 days (12.63%)
Driest month June (33.75%)
Wettest month March (61.92%)

Weather averages by month

Month High / Low (°C) Rain
January 14.54° / 5.55° 6.64 days
February 15.76° / 5.86° 6.45 days
March 18.36° / 7.62° 8.82 days
April 21.89° / 9.74° 5.64 days
May 26.15° / 12.59° 3.0 days
June 33.12° / 16.69° 0.27 days
July 36.89° / 18.87° 1.09 days
August 36.48° / 18.51° 0.55 days
September 33.37° / 17.13° 1.0 days
October 26.31° / 13.25° 2.55 days
November 18.83° / 8.58° 3.91 days
December 13.6° / 5.42° 6.18 days

California's weather

Frequently asked questions

1. What is the hottest month in California?

September has the highest average monthly temperature (daily mean of 33.37ºC) and January are the coolest (daily mean of 5.55ºC).

2. What should I wear in California today?

For today's very hot weather in California, with the high temperatures above 31ºC (87.8ºF), consider wearing:
- Light, natural fabrics (like cotton or linen)
- Ultra-thin, breathable socks
- High SPF sunscreen for outdoor activities
- Broad-brimmed sun hat

Temperature

Early
5°C / 22°C
Morning
6°C / 17°C
Afternoon
6°C / 18°C
Evening
10°C / 30°C

Air quality

Unhealthy

Unhealthy air quality, health risks for all, emergency conditions possible

  • CO2 474
  • CO 152
  • NH3 0
  • NO2 11
  • O3 105
  • PM10 57
  • PM25 44
  • SO2 2
  • CH4 1,399

Sunrise / Sunset

13:43
01:58