Poway climate — normals and trends
Poway (United States) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 16.4 °C and it receives 411 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is August (22.4 °C on average) and the coldest is January (11.2 °C). Rainfall peaks in February.
Poway averages 1 frost days, 30 hot days (≥ 30 °C) and 44 rainy days per year.
Poway has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The number of frost days there went from about 2 to 0 per year over the period.
The hottest day of the period reached 40.2 °C (on 20 June 2016) and the coldest -3.8 °C (on 12 January 1949).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
PowayCalifornia
- coords
- 32.96°, -117.04°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.4°C
Average daily high
22.2°C
Average daily low
11.6°C
Annual rainfall
411mm
Sunshine / day
11.2h
Mean relative humidity
67%
Average peak wind
13.5km/h
Seasonal range
11.2°C
Frost days (< 0 °C)
1 d/yr
Hot days (≥ 30 °C)
30 d/yr
Rainy days (≥ 1 mm)
44 d/yr
Annual snowfall
0.5 cm
Average feels-like high
22.0 °C
Average feels-like low
10.6 °C
Average peak gust
31.6 km/h
Tropical nights (≥ 20 °C)
13 d/yr
Solar radiation
20.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.43 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
40.2 °C
20 June 2016
Coldest day
-3.8 °C
12 January 1949
Wettest day
85 mm
5 March 1995
Windiest day
46.4 km/h
30 November 1982
Strongest gust
94.0 km/h
30 November 1982
Hottest feels-like
42.4 °C
5 September 2020
Coldest feels-like
-8.1 °C
12 January 1949
Snowiest day
5.0 cm
25 January 1949
Sunniest day
13.9 h
11 July 2025
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 18.5 °C | +1.1 °C | 27 mm | -47 mm |
| Feb | 19.5 °C | +1.8 °C | 52 mm | -28 mm |
| Mar | 17.1 °C | -1.0 °C | 109 mm | +34 mm |
| Apr | 19.4 °C | -0.5 °C | 22 mm | -13 mm |
| May | 22.7 °C | +1.0 °C | 12 mm | -2 mm |
| Jun | 25.0 °C | +0.3 °C | 3 mm | 0 mm |
| Jul | 26.0 °C | -1.8 °C | 1 mm | -2 mm |
| Aug | 28.4 °C | +0.1 °C | 12 mm | +8 mm |
| Sep | 26.7 °C | -0.8 °C | 20 mm | +14 mm |
| Oct | 24.4 °C | -0.1 °C | 23 mm | +4 mm |
| Nov | 21.9 °C | +1.0 °C | 92 mm | +51 mm |
| Dec | 21.2 °C | +3.3 °C | 44 mm | -14 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Poway?
Poway has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 16.4 °C and it receives 411 mm of precipitation per year.
What is the hottest day ever recorded in Poway?
The hottest day measured in Poway between 1940 and 2025 was 20 June 2016, reaching 40.2 °C.
What is the coldest day in Poway?
The coldest day measured in Poway between 1940 and 2025 was 12 January 1949, at -3.8 °C.
Does it snow in Poway?
Almost never: Poway sees virtually no snow, with about 1 frost days per year.
Has the climate of Poway warmed?
Yes: Poway warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Poway?
The wettest day measured in Poway between 1940 and 2025 was 5 March 1995, with 85 mm of rain in 24 hours.
What was the windiest day in Poway?
The windiest day measured in Poway between 1940 and 2025 was 30 November 1982, with winds reaching 46.4 km/h.
What is the warmest month in Poway?
The warmest month in Poway is August (22.4 °C on average); the coldest is January (11.2 °C).
How much does it rain in Poway?
Poway receives on average 411 mm of precipitation per year, spread over about 44 rainy days.
Is it sunny in Poway?
Poway gets on average 11.2 hours of sunshine per day, roughly 4,088 hours per year over 1940-2025.
What is the biggest single-day snowfall in Poway?
The heaviest 24-hour snowfall measured in Poway between 1940 and 2025 was 25 January 1949, with 5.0 cm.
Are there tropical nights in Poway?
Yes: Poway has on average 13 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Poway?
In Poway, between 1940 and 2025, the highest apparent temperature reached 42.4 °C on 5 September 2020, and the lowest was -8.1 °C on 12 January 1949.
Compare Poway with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Poway