Climate averages 1991–2020

Blackburn weather
in April.

A cool, moderately wet month: the 7th warmest and the driest of the year.

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

Average high 11.2°C Daytime mean, April

Average low 3.8°C Night-time mean, April

Rainfall 75 mm 14 days with ≥1 mm

Daylight 14 h Sunrise to sunset, per day

April is a cool month in Blackburn: daytime highs average 11.2°C and nights cool to about 3.8°C. By daytime temperature it is the 7th warmest of the 12 months.

Expect about 75 mm of rain on roughly 14 days, which makes April a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 13 h 59 min on an average April day.

The nearest other city in this atlas is Preston (15 km away). In April its highs average 11.5°C, about as warm as Blackburn, with 72 mm of rain.

Among the 143 cities listed in the United Kingdom, Blackburn ranks joint 120th of 143 for the warmest April highs and 141st of 143 for the driest April (rainfall, lowest first). The mean April high of those 143 cities is 12.2°C; Blackburn is 1.0°C cooler than that mean.

From April to May, average highs rise by 3.0°C to 14.2°C, and monthly rainfall rises from 75 mm to 79 mm.

The annual picture

April 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

Blackburn climate table

1991–2020

Monthly climate averages for Blackburn, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January	6.0°C1.5°C	1.5°C	103	16.3	8.18 h
February	6.5°C1.3°C	1.3°C	90	14.1	9.710 h
March	8.5°C2.1°C	2.1°C	84	13.8	11.812 h
April, selected	11.2°C3.8°C	3.8°C	75	13.6	14.014 h
May	14.2°C6.7°C	6.7°C	79	13.6	15.916 h
June	16.5°C9.7°C	9.7°C	91	14.3	17.017 h
July	18.2°C11.6°C	11.6°C	99	15.9	16.517 h
August	17.9°C11.6°C	11.6°C	108	16.4	14.815 h
September	15.7°C9.6°C	9.6°C	91	13.6	12.813 h
October	12.4°C7.1°C	7.1°C	108	15.4	10.611 h
November	8.7°C4.1°C	4.1°C	107	16.4	8.69 h
December	6.3°C1.8°C	1.8°C	119	16.2	7.58 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

April in nearby cities

Distance from Blackburn

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 Blackburn) is explained once on the Blackburn year overview and on the Sources, method and limits page.