Northampton climate — normals and trends
Northampton (United Kingdom) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.6 °C and it receives 636 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 (16.5 °C on average) and the coldest is January (3.6 °C). Rainfall peaks in May.
Northampton averages 43 frost days, 1 hot days (≥ 30 °C) and 129 rainy days per year.
Northampton has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The number of frost days there went from about 61 to 25 per year over the period.
The hottest day of the period reached 38.5 °C (on 19 July 2022) and the coldest -15.6 °C (on 23 January 1963).
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
NorthamptonEngland
- coords
- 52.25°, -0.88°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.6°C
Average daily high
13.0°C
Average daily low
6.3°C
Annual rainfall
636mm
Sunshine / day
7.2h
Mean relative humidity
81%
Average peak wind
22.0km/h
Seasonal range
12.9°C
Frost days (< 0 °C)
43 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
129 d/yr
Annual snowfall
18.3 cm
Average feels-like high
10.0 °C
Average feels-like low
3.1 °C
Average peak gust
41.6 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.46 · 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
38.5 °C
19 July 2022
Coldest day
-15.6 °C
23 January 1963
Wettest day
50 mm
20 July 2007
Windiest day
59.4 km/h
2 January 1976
Strongest gust
123.1 km/h
18 January 2007
Hottest feels-like
36.9 °C
28 July 1947
Coldest feels-like
-20.3 °C
20 January 1940
Snowiest day
18.2 cm
26 April 1981
Sunniest day
16.0 h
4 June 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 | 5.9 °C | 0.0 °C | 74 mm | +23 mm |
| Feb | 7.3 °C | +0.7 °C | 48 mm | +6 mm |
| Mar | 12.4 °C | +3.2 °C | 15 mm | -33 mm |
| Apr | 16.2 °C | +4.2 °C | 20 mm | -31 mm |
| May | 18.4 °C | +3.1 °C | 21 mm | -39 mm |
| Jun | 22.8 °C | +4.3 °C | 32 mm | -25 mm |
| Jul | 23.2 °C | +2.6 °C | 63 mm | +7 mm |
| Aug | 22.8 °C | +2.5 °C | 23 mm | -34 mm |
| Sep | 18.1 °C | +0.4 °C | 57 mm | +5 mm |
| Oct | 13.9 °C | +0.2 °C | 51 mm | -4 mm |
| Nov | 10.7 °C | +1.5 °C | 125 mm | +70 mm |
| Dec | 8.9 °C | +2.1 °C | 76 mm | +23 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 Northampton?
Northampton has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.6 °C and it receives 636 mm of precipitation per year.
What is the hottest day ever recorded in Northampton?
The hottest day measured in Northampton between 1940 and 2025 was 19 July 2022, reaching 38.5 °C.
What is the coldest day in Northampton?
The coldest day measured in Northampton between 1940 and 2025 was 23 January 1963, at -15.6 °C.
Does it snow in Northampton?
Yes. Northampton gets on average 18.3 cm of snow per year and has around 43 frost days.
Has the climate of Northampton warmed?
Yes: Northampton warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Northampton?
The wettest day measured in Northampton between 1940 and 2025 was 20 July 2007, with 50 mm of rain in 24 hours.
What was the windiest day in Northampton?
The windiest day measured in Northampton between 1940 and 2025 was 2 January 1976, with winds reaching 59.4 km/h.
What is the warmest month in Northampton?
The warmest month in Northampton is July (16.5 °C on average); the coldest is January (3.6 °C).
How much does it rain in Northampton?
Northampton receives on average 636 mm of precipitation per year, spread over about 129 rainy days.
Is it sunny in Northampton?
Northampton gets on average 7.2 hours of sunshine per day, roughly 2,628 hours per year over 1940-2025.
What is the biggest single-day snowfall in Northampton?
The heaviest 24-hour snowfall measured in Northampton between 1940 and 2025 was 26 April 1981, with 18.2 cm.
Are there tropical nights in Northampton?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Northampton.
What was the most extreme apparent temperature in Northampton?
In Northampton, between 1940 and 2025, the highest apparent temperature reached 36.9 °C on 28 July 1947, and the lowest was -20.3 °C on 20 January 1940.
Compare Northampton with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Northampton