Morgan Hill climate — normals and trends
Morgan Hill (United States) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 13.8 °C and it receives 526 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 July (20.0 °C on average) and the coldest is January (7.7 °C). Rainfall peaks in January.
Morgan Hill averages 11 frost days, 34 hot days (≥ 30 °C) and 54 rainy days per year.
Morgan Hill has warmed by +1.4 °C between 1940 and 2025, or +0.16 °C per decade. This trend is statistically significant.
The number of frost days there went from about 18 to 4 per year over the period.
The hottest day of the period reached 41.7 °C (on 14 July 1972) and the coldest -7.2 °C (on 22 December 1990).
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
Morgan HillCalifornia
- coords
- 37.13°, -121.65°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.8°C
Average daily high
20.3°C
Average daily low
8.5°C
Annual rainfall
526mm
Sunshine / day
10.8h
Mean relative humidity
66%
Average peak wind
11.1km/h
Seasonal range
12.3°C
Frost days (< 0 °C)
11 d/yr
Hot days (≥ 30 °C)
34 d/yr
Rainy days (≥ 1 mm)
54 d/yr
Annual snowfall
2.1 cm
Average feels-like high
19.3 °C
Average feels-like low
6.6 °C
Average peak gust
31.6 km/h
Tropical nights (≥ 20 °C)
2 d/yr
Solar radiation
19.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.38 · 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
41.7 °C
14 July 1972
Coldest day
-7.2 °C
22 December 1990
Wettest day
123 mm
13 October 2009
Windiest day
39.1 km/h
22 December 1982
Strongest gust
122.4 km/h
14 February 1986
Hottest feels-like
43.2 °C
4 August 1998
Coldest feels-like
-11.7 °C
22 December 1990
Snowiest day
9.0 cm
3 January 1974
Sunniest day
14.2 h
6 July 1959
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 | 15.4 °C | +2.5 °C | 12 mm | -90 mm |
| Feb | 15.5 °C | +1.2 °C | 147 mm | +48 mm |
| Mar | 15.4 °C | -0.2 °C | 96 mm | +13 mm |
| Apr | 19.1 °C | +0.9 °C | 19 mm | -22 mm |
| May | 23.3 °C | +2.0 °C | 3 mm | -15 mm |
| Jun | 25.0 °C | -0.1 °C | 0 mm | -3 mm |
| Jul | 25.8 °C | -2.4 °C | 0 mm | -1 mm |
| Aug | 28.4 °C | +0.5 °C | 0 mm | -1 mm |
| Sep | 26.3 °C | -0.5 °C | 5 mm | +1 mm |
| Oct | 21.4 °C | -1.3 °C | 41 mm | +15 mm |
| Nov | 17.8 °C | +0.9 °C | 111 mm | +53 mm |
| Dec | 14.4 °C | +1.2 °C | 71 mm | -18 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 Morgan Hill?
Morgan Hill has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 13.8 °C and it receives 526 mm of precipitation per year.
What is the hottest day ever recorded in Morgan Hill?
The hottest day measured in Morgan Hill between 1940 and 2025 was 14 July 1972, reaching 41.7 °C.
What is the coldest day in Morgan Hill?
The coldest day measured in Morgan Hill between 1940 and 2025 was 22 December 1990, at -7.2 °C.
Does it snow in Morgan Hill?
Yes. Morgan Hill gets on average 2.1 cm of snow per year and has around 11 frost days.
Has the climate of Morgan Hill warmed?
Yes: Morgan Hill warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Morgan Hill?
The wettest day measured in Morgan Hill between 1940 and 2025 was 13 October 2009, with 123 mm of rain in 24 hours.
What was the windiest day in Morgan Hill?
The windiest day measured in Morgan Hill between 1940 and 2025 was 22 December 1982, with winds reaching 39.1 km/h.
What is the warmest month in Morgan Hill?
The warmest month in Morgan Hill is July (20.0 °C on average); the coldest is January (7.7 °C).
How much does it rain in Morgan Hill?
Morgan Hill receives on average 526 mm of precipitation per year, spread over about 54 rainy days.
Is it sunny in Morgan Hill?
Morgan Hill gets on average 10.8 hours of sunshine per day, roughly 3,942 hours per year over 1940-2025.
What is the biggest single-day snowfall in Morgan Hill?
The heaviest 24-hour snowfall measured in Morgan Hill between 1940 and 2025 was 3 January 1974, with 9.0 cm.
Are there tropical nights in Morgan Hill?
Yes: Morgan Hill has on average 2 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Morgan Hill?
In Morgan Hill, between 1940 and 2025, the highest apparent temperature reached 43.2 °C on 4 August 1998, and the lowest was -11.7 °C on 22 December 1990.
Compare Morgan Hill with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Morgan Hill