Warm afternoons come to Blackhall Mill less often than to 75% of UK towns
In January the night’s low is typically 2.1°C (36°F). Winters are mild: January nights here are milder than in 73% of UK towns. Expect the heaviest rain in November and the lightest in May. Windscreens need scraping on about 41 mornings a year, the nights the air drops below 0°C.
Met Office 1991–2020 averages for the town itself.
A year in Blackhall Mill at a glance
Each month’s typical high and low, in °C.
What a year in Blackhall Mill feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 751 mm of rain a year
November is the wettest month and May the driest. About 15 days a year bring 10 mm (0.4 in) or more.
Rain by month
Millimetres
41 air frosts and 5 days of 25°C a year
On about 41 nights a year the air drops below freezing, and on about under 1 days it stays below freezing all day. About 5 days a year reach 25°C (77°F).
Day counts are 1991–2020 averages from the Met Office’s 2 km grid. The Met Office calls a day of 25°C or more a summer day and a night below 0°C an air frost; ground frosts, on grass, come more often.
The Met Office station at Durham
Durham is 13 miles south-east of Blackhall Mill, 102 m (335 ft) above sea level. It is the nearest of the 37 long-running stations the Met Office publishes in full.
| Month | High | Low | Rain | Air frosts |
|---|---|---|---|---|
| January | 6.9°C | 1.3°C | 53 mm | 10.3 |
| February | 7.8°C | 1.4°C | 46 mm | 9.8 |
| March | 9.9°C | 2.5°C | 41 mm | 6.5 |
| April | 12.5°C | 4.1°C | 51 mm | 3.2 |
| May | 15.4°C | 6.5°C | 45 mm | 0.8 |
| June | 18.0°C | 9.3°C | 61 mm | 0.0 |
| July | 20.2°C | 11.3°C | 61 mm | 0.0 |
| August | 19.9°C | 11.3°C | 67 mm | 0.0 |
| September | 17.4°C | 9.2°C | 57 mm | 0.0 |
| October | 13.5°C | 6.5°C | 63 mm | 1.2 |
| November | 9.7°C | 3.6°C | 76 mm | 4.6 |
| December | 7.1°C | 1.4°C | 61 mm | 10.4 |
| Year | 13.2°C | 5.7°C | 681 mm | 47 |
Met Office historic station data, Durham, 1991–2020 months averaged (a month needs 20 of the 30 years; estimated values counted, missing months left out). Sunshine: Campbell-Stokes recorder.
How Blackhall Mill compares
Against the 2,537 towns and cities of 2,500 or more across the UK, each with its own Met Office averages, and its place among County Durham towns that size.
Nearby towns’ climate
The nearest towns of 1,000+ within 12 miles: a hill, a valley or the sea can make a real difference over a few miles.
| Town | July high | January low | Rain a year |
|---|---|---|---|
| Blackhall Mill | 20.2°C | 2.1°C | 751 mm |
| Chopwell 1.3 mi | 19.5°C 0.7°C cooler | 2.0°C about the same | 825 mm |
| Medomsley 1.3 mi | 20.2°C about the same | 1.6°C 0.5°C colder | 764 mm |
| High Spen 2.5 mi | 20.1°C about the same | 1.9°C about the same | 719 mm |
| Leadgate 2.9 mi | 19.2°C 1.0°C cooler | 1.3°C 0.9°C colder | 850 mm |
| Dipton 3.0 mi | 19.3°C 0.9°C cooler | 1.7°C about the same | 804 mm |
| Rowlands Gill 3.1 mi | 20.4°C about the same | 2.1°C about the same | 673 mm |
Blackhall Mill weather by month
Average daily high and low, mean temperature and rain, 1991–2020, for the town itself (the Met Office’s HadUK-Grid).
| Month | High | Low | Mean | Rain |
|---|---|---|---|---|
| January | 6.6°C 44°F | 2.1°C 36°F | 4.5°C | 52 mm 2.0 in |
| February | 7.3°C 45°F | 1.7°C 35°F | 4.5°C | 56 mm 2.2 in |
| March | 9.1°C 48°F | 2.5°C 36°F | 5.8°C | 51 mm 2.0 in |
| April | 12.2°C 54°F | 4.2°C 39°F | 8.2°C | 55 mm 2.2 in |
| May | 14.9°C 59°F | 6.5°C 44°F | 10.8°C | 49 mm 1.9 in |
| June | 17.6°C 64°F | 9.4°C 49°F | 13.5°C | 67 mm 2.6 in |
| July | 20.2°C 68°F | 11.5°C 53°F | 15.8°C | 63 mm 2.5 in |
| August | 19.8°C 68°F | 11.8°C 53°F | 15.6°C | 71 mm 2.8 in |
| September | 16.7°C 62°F | 9.4°C 49°F | 13.1°C | 63 mm 2.5 in |
| October | 13.0°C 55°F | 6.5°C 44°F | 9.6°C | 71 mm 2.8 in |
| November | 9.2°C 49°F | 4.0°C 39°F | 6.7°C | 81 mm 3.2 in |
| December | 6.8°C 44°F | 1.7°C 35°F | 4.2°C | 73 mm 2.9 in |
| Year | 12.8°C | 5.9°C | 9.3°C | 751 mm |
Where Blackhall Mill’s numbers come from
Averages over 30 years, not a forecast.
- Mean temperature, rain and day counts: HadUK-Grid 1991–2020 averages for the Met Office 2 km grid square nearest Blackhall Mill’s centre (the town is smaller than one square).
- Highs and lows: the Met Office publishes average daily maxima and minima on its 12 km grid; each is moved by the difference between the town’s 2 km mean temperature and the 12 km square’s, which carries the town’s own height and setting over.
- Weather station and sunshine: Met Office historic station data for Durham, 13 miles away, months of 1991–2020 averaged.
- Comparisons: every town and city of 2,500 or more across the UK, all four nations, read the same way.
Met Office HadUK-Grid · Met Office Climate Data Portal · Historic station data. Open Government Licence v3.0.
Questions about Blackhall Mill’s climate
How warm does Blackhall Mill get in summer?
July is the warmest month, with average highs of 20.2°C (68°F). About 5 days a year reach 25°C (77°F), fewer than 75% of UK towns.
How cold does Blackhall Mill get in winter?
February nights average 1.7°C (35°F). The air drops below freezing on about 41 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Blackhall Mill get?
About 751 mm (30 in) a year, less than 54% of UK towns. November is the wettest month (81 mm) and May the driest (49 mm).
Where do these figures come from?
The Met Office’s HadUK-Grid 1991–2020 averages, which turn thousands of weather stations into a map of the UK in 2 km squares; the page reads the squares inside Blackhall Mill. They are 30-year averages, not a forecast.
Contains Met Office data © Crown copyright 2026, Open Government Licence v3.0. HadUK-Grid 1991–2020 averages via the Met Office Climate Data Portal; station averages from Met Office historic station data. Today’s forecast for Blackhall Mill →
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