Photo: Andrew Curtis · CC BY-SA 2.0Rainfall in Heddon-on-the-Wall trails that of 85% of UK towns: 634 mm (25 in) a year
January mornings start at about 1.7°C (35°F). Warm afternoons come less often than in 77% of UK towns. The rainiest month is November; the driest is March. Keep the boiler serviced for the months from November to April, which average under 10°C.
Met Office 1991–2020 averages for the town itself.
A year in Heddon-on-the-Wall at a glance
Each month’s typical high and low, in °C.
What a year in Heddon-on-the-Wall feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 634 mm of rain a year
November is the wettest month and March the driest. About 13 days a year bring 10 mm (0.4 in) or more.
Rain by month
Millimetres
42 air frosts and 5 days of 25°C a year
On about 42 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 18 miles south-east of Heddon-on-the-Wall, 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 Heddon-on-the-Wall 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 Northumberland 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 |
|---|---|---|---|
| Heddon-on-the-Wall | 20.3°C | 1.7°C | 634 mm |
| Throckley 1.4 mi | 20.3°C about the same | 1.9°C about the same | 657 mm |
| Wylam 1.7 mi | 20.4°C about the same | 1.8°C about the same | 692 mm |
| Newburn 2.2 mi | 20.3°C about the same | 1.8°C about the same | 660 mm |
| Ryton 2.2 mi | 20.1°C about the same | 1.7°C about the same | 709 mm |
| Crawcrook and Greenside 2.3 mi | 20.1°C about the same | 2.2°C about the same | 708 mm |
| Ovingham 3.4 mi | 20.4°C about the same | 1.7°C about the same | 698 mm |
Heddon-on-the-Wall 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 | 6.9°C 44°F | 1.7°C 35°F | 4.3°C | 44 mm 1.7 in |
| February | 7.7°C 46°F | 1.7°C 35°F | 4.7°C | 41 mm 1.6 in |
| March | 9.7°C 49°F | 2.6°C 37°F | 6.2°C | 40 mm 1.6 in |
| April | 12.4°C 54°F | 4.2°C 40°F | 8.3°C | 47 mm 1.8 in |
| May | 15.3°C 60°F | 6.7°C 44°F | 11.0°C | 43 mm 1.7 in |
| June | 18.0°C 64°F | 9.5°C 49°F | 13.7°C | 61 mm 2.4 in |
| July | 20.3°C 68°F | 11.5°C 53°F | 15.9°C | 61 mm 2.4 in |
| August | 20.0°C 68°F | 11.6°C 53°F | 15.6°C | 65 mm 2.6 in |
| September | 17.3°C 63°F | 9.5°C 49°F | 13.4°C | 54 mm 2.1 in |
| October | 13.5°C 56°F | 6.6°C 44°F | 10.0°C | 58 mm 2.3 in |
| November | 9.7°C 49°F | 3.8°C 39°F | 6.8°C | 66 mm 2.6 in |
| December | 7.1°C 45°F | 1.6°C 35°F | 4.3°C | 55 mm 2.2 in |
| Year | 13.1°C | 5.9°C | 9.5°C | 634 mm |
Where Heddon-on-the-Wall’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 Heddon-on-the-Wall’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, 18 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 Heddon-on-the-Wall’s climate
How warm does Heddon-on-the-Wall get in summer?
July is the warmest month, with average highs of 20.3°C (68°F). About 5 days a year reach 25°C (77°F), fewer than 77% of UK towns.
How cold does Heddon-on-the-Wall get in winter?
December nights average 1.6°C (35°F). The air drops below freezing on about 42 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Heddon-on-the-Wall get?
About 634 mm (25 in) a year, less than 85% of UK towns. November is the wettest month (66 mm) and March the driest (40 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 Heddon-on-the-Wall. 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 Heddon-on-the-Wall →
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