Jacksonville climate — normals and trends
Jacksonville (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 16.8 °C and it receives 1,140 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 (27.7 °C on average) and the coldest is January (4.7 °C). Rainfall peaks in April.
Jacksonville averages 42 frost days, 91 hot days (≥ 30 °C) and 110 rainy days per year.
Jacksonville has warmed by +1.3 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.
The number of frost days there went from about 47 to 37 per year over the period.
The hottest day of the period reached 43.2 °C (on 3 August 2011) and the coldest -22.9 °C (on 2 February 1951).
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
JacksonvilleArkansas
- coords
- 34.87°, -92.11°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.8°C
Average daily high
22.0°C
Average daily low
12.2°C
Annual rainfall
1,140mm
Sunshine / day
9.2h
Mean relative humidity
69%
Average peak wind
15.7km/h
Seasonal range
23.0°C
Frost days (< 0 °C)
42 d/yr
Hot days (≥ 30 °C)
91 d/yr
Rainy days (≥ 1 mm)
110 d/yr
Annual snowfall
10.3 cm
Average feels-like high
22.1 °C
Average feels-like low
11.1 °C
Average peak gust
33.6 km/h
Tropical nights (≥ 20 °C)
101 d/yr
Solar radiation
16.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.3 °C
since 1940
+0.2 °C per decade · r² = 0.26 · 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
43.2 °C
3 August 2011
Coldest day
-22.9 °C
2 February 1951
Wettest day
192 mm
3 September 2008
Windiest day
46.2 km/h
18 November 2003
Strongest gust
118.1 km/h
18 November 2003
Hottest feels-like
46.8 °C
3 August 2011
Coldest feels-like
-28.1 °C
2 February 1951
Snowiest day
17.1 cm
8 February 2010
Sunniest day
14.0 h
25 May 1940
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 | 8.3 °C | -1.4 °C | 86 mm | -5 mm |
| Feb | 12.8 °C | +0.6 °C | 120 mm | +23 mm |
| Mar | 21.5 °C | +4.4 °C | 75 mm | -50 mm |
| Apr | 25.0 °C | +2.6 °C | 290 mm | +163 mm |
| May | 26.3 °C | -0.4 °C | 161 mm | +36 mm |
| Jun | 32.1 °C | +1.2 °C | 151 mm | +73 mm |
| Jul | 33.8 °C | +1.2 °C | 47 mm | -27 mm |
| Aug | 32.0 °C | -0.2 °C | 59 mm | -6 mm |
| Sep | 30.5 °C | +1.7 °C | 76 mm | -1 mm |
| Oct | 24.4 °C | +1.0 °C | 97 mm | +15 mm |
| Nov | 19.5 °C | +3.0 °C | 59 mm | -39 mm |
| Dec | 13.4 °C | +2.0 °C | 22 mm | -83 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 Jacksonville?
Jacksonville has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 16.8 °C and it receives 1,140 mm of precipitation per year.
What is the hottest day ever recorded in Jacksonville?
The hottest day measured in Jacksonville between 1940 and 2025 was 3 August 2011, reaching 43.2 °C.
What is the coldest day in Jacksonville?
The coldest day measured in Jacksonville between 1940 and 2025 was 2 February 1951, at -22.9 °C.
Does it snow in Jacksonville?
Yes. Jacksonville gets on average 10.3 cm of snow per year and has around 42 frost days.
Has the climate of Jacksonville warmed?
Yes: Jacksonville warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Jacksonville?
The wettest day measured in Jacksonville between 1940 and 2025 was 3 September 2008, with 192 mm of rain in 24 hours.
What was the windiest day in Jacksonville?
The windiest day measured in Jacksonville between 1940 and 2025 was 18 November 2003, with winds reaching 46.2 km/h.
What is the warmest month in Jacksonville?
The warmest month in Jacksonville is July (27.7 °C on average); the coldest is January (4.7 °C).
How much does it rain in Jacksonville?
Jacksonville receives on average 1,140 mm of precipitation per year, spread over about 110 rainy days.
Is it sunny in Jacksonville?
Jacksonville gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.
What is the biggest single-day snowfall in Jacksonville?
The heaviest 24-hour snowfall measured in Jacksonville between 1940 and 2025 was 8 February 2010, with 17.1 cm.
Are there tropical nights in Jacksonville?
Yes: Jacksonville has on average 101 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Jacksonville?
In Jacksonville, between 1940 and 2025, the highest apparent temperature reached 46.8 °C on 3 August 2011, and the lowest was -28.1 °C on 2 February 1951.
Compare Jacksonville with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Jacksonville