Summer warmth: Dungannon logs fewer 25-degree days than 92% of UK towns
Midwinter brings lows of about 1.5°C (35°F). Of all months, December brings the most rain and April the least. By rainfall alone, it ranks wetter than 76% of UK towns. Frost greets about 44 mornings a year, so leave time to clear the car.
Met Office 1991–2020 averages for the town itself.
A year in Dungannon at a glance
Each month’s typical high and low, in °C.
What a year in Dungannon feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 968 mm of rain a year
December is the wettest month and April the driest. About 25 days a year bring 10 mm (0.4 in) or more. 4th wettest of 5 Mid Ulster towns of 2,500+.
Rain by month
Millimetres
Sunshine by month
Hours of bright sunshine at Armagh
44 air frosts and 2 days of 25°C a year
On about 44 nights a year the air drops below freezing, and on about under 1 days it stays below freezing all day. About 2 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 Armagh
Armagh is 11 miles south of Dungannon, 62 m (203 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 | Sun (hours) |
|---|---|---|---|---|---|
| January | 7.8°C | 2.2°C | 73 mm | 7.7 | 47 |
| February | 8.6°C | 2.0°C | 59 mm | 7.6 | 71 |
| March | 10.4°C | 3.1°C | 60 mm | 5.3 | 102 |
| April | 13.0°C | 4.6°C | 56 mm | 2.3 | 150 |
| May | 15.9°C | 7.0°C | 58 mm | 0.2 | 180 |
| June | 18.2°C | 9.8°C | 63 mm | 0.0 | 146 |
| July | 19.7°C | 11.7°C | 70 mm | 0.0 | 135 |
| August | 19.4°C | 11.6°C | 79 mm | 0.0 | 141 |
| September | 17.3°C | 9.7°C | 65 mm | 0.0 | 114 |
| October | 13.7°C | 7.0°C | 81 mm | 0.8 | 92 |
| November | 10.3°C | 4.3°C | 82 mm | 3.5 | 62 |
| December | 8.0°C | 2.4°C | 81 mm | 7.3 | 43 |
| Year | 13.5°C | 6.3°C | 825 mm | 35 | 1,281 |
Met Office historic station data, Armagh, 1991–2020 months averaged (a month needs 20 of the 30 years; estimated values counted, missing months left out). Sunshine: Campbell-Stokes recorder.
How Dungannon 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 Mid Ulster 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 |
|---|---|---|---|
| Dungannon | 19.3°C | 1.5°C | 968 mm |
| Coalisland 3.7 mi | 19.4°C about the same | 1.9°C about the same | 885 mm |
| Cookstown 9.7 mi | 19.2°C about the same | 1.6°C about the same | 1,034 mm |
| Armagh 11.7 mi | 19.9°C 0.6°C warmer | 1.9°C about the same | 844 mm |
Dungannon 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 | 7.4°C 45°F | 1.5°C 35°F | 4.5°C | 95 mm 3.7 in |
| February | 8.3°C 47°F | 1.3°C 34°F | 4.9°C | 73 mm 2.9 in |
| March | 10.1°C 50°F | 2.6°C 37°F | 6.4°C | 70 mm 2.8 in |
| April | 12.3°C 54°F | 4.1°C 39°F | 8.0°C | 62 mm 2.4 in |
| May | 15.6°C 60°F | 6.3°C 43°F | 10.9°C | 65 mm 2.5 in |
| June | 18.0°C 64°F | 9.0°C 48°F | 13.5°C | 71 mm 2.8 in |
| July | 19.3°C 67°F | 10.8°C 51°F | 15.2°C | 79 mm 3.1 in |
| August | 19.0°C 66°F | 10.7°C 51°F | 14.8°C | 89 mm 3.5 in |
| September | 16.9°C 62°F | 8.9°C 48°F | 13.0°C | 74 mm 2.9 in |
| October | 13.3°C 56°F | 6.1°C 43°F | 9.7°C | 96 mm 3.8 in |
| November | 10.0°C 50°F | 3.7°C 39°F | 6.9°C | 94 mm 3.7 in |
| December | 7.8°C 46°F | 1.9°C 35°F | 4.9°C | 103 mm 4.0 in |
| Year | 13.2°C | 5.6°C | 9.4°C | 968 mm |
Where Dungannon’s numbers come from
Averages over 30 years, not a forecast.
- Mean temperature, rain and day counts: HadUK-Grid 1991–2020 averages for the 2 Met Office 2 km grid squares whose centre lies inside Dungannon’s settlement.
- 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 Armagh, 11 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 Dungannon’s climate
How warm does Dungannon get in summer?
July is the warmest month, with average highs of 19.3°C (67°F). About 2 days a year reach 25°C (77°F), fewer than 92% of UK towns.
How cold does Dungannon get in winter?
February nights average 1.3°C (34°F). The air drops below freezing on about 44 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Dungannon get?
About 968 mm (38 in) a year, more than 76% of UK towns. December is the wettest month (103 mm) and April the driest (62 mm).
How sunny is it?
The nearest Met Office station with a sunshine record, Armagh (11 miles away), averages 1,281 hours of bright sunshine a year. Sunshine isn’t on the town grid, so this is the station’s figure.
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 Dungannon. 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 Dungannon →
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