Climate averages 1991–2020

Northampton weather
in March.

A cool, moderately wet month: the 8th warmest and the 2nd driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 9.7°C Daytime mean, March

Average low 2.7°C Night-time mean, March

Rainfall 45 mm 10 days with ≥1 mm

Daylight 12 h Sunrise to sunset, per day

March is a cool month in Northampton: daytime highs average 9.7°C and nights cool to about 2.7°C. By daytime temperature it is the 8th warmest of the 12 months.

Expect about 45 mm of rain on roughly 10 days, which makes March a moderately wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 50 min on an average March day.

The nearest other city in this atlas is Milton Keynes (25 km away). In March its highs average 9.7°C, about as warm as Northampton, with 44 mm of rain.

Among the 143 cities listed in the United Kingdom, Northampton ranks joint 57th of 143 for the warmest March highs and joint 45th of 143 for the driest March (rainfall, lowest first). The mean March high of those 143 cities is 9.5°C; Northampton is 0.2°C warmer than that mean.

From March to April, average highs rise by 2.8°C to 12.5°C, and monthly rainfall rises from 45 mm to 52 mm.

The annual picture

March in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Northampton climate table

1991–2020

Monthly climate averages for Northampton, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January	6.7°C1.8°C	1.8°C	52	11.6	8.38 h
February	7.3°C1.6°C	1.6°C	42	9.9	9.910 h
March, selected	9.7°C2.7°C	2.7°C	45	10.2	11.812 h
April	12.5°C4.4°C	4.4°C	52	11.2	13.914 h
May	15.6°C7.4°C	7.4°C	57	10.8	15.716 h
June	18.4°C10.5°C	10.5°C	60	10.4	16.717 h
July	20.8°C12.7°C	12.7°C	62	11.5	16.316 h
August	20.5°C12.6°C	12.6°C	61	10.9	14.715 h
September	17.8°C10.4°C	10.4°C	54	9.4	12.713 h
October	13.7°C7.8°C	7.8°C	62	11.2	10.711 h
November	9.5°C4.5°C	4.5°C	59	11.2	8.89 h
December	6.9°C2.3°C	2.3°C	57	11.0	7.88 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

March in nearby cities

Distance from Northampton

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Northampton) is explained once on the Northampton year overview and on the Sources, method and limits page.