Photo: Kenneth Allen · CC BY-SA 2.0Summer warmth: Coalisland logs fewer 25-degree days than 93% of UK towns
Nights in January average 1.9°C (35°F). December is the wettest month, April the driest. Frosty nights are scarcer than in 70% of UK towns. Gritters and ice scrapers earn their keep on roughly 36 nights a year below 0°C.
Met Office 1991–2020 averages for the town itself.
A year in Coalisland at a glance
Each month’s typical high and low, in °C.
What a year in Coalisland feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 885 mm of rain a year
December is the wettest month and April the driest. About 20 days a year bring 10 mm (0.4 in) or more. 5th wettest of 5 Mid Ulster towns of 2,500+.
Rain by month
Millimetres
Sunshine by month
Hours of bright sunshine at Armagh
36 air frosts and 2 days of 25°C a year
On about 36 nights a year the air drops below freezing; days that stay below freezing are rare. 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 13 miles south of Coalisland, 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 Coalisland 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.
Coalisland 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 | 7.7°C 46°F | 1.9°C 35°F | 4.9°C | 83 mm 3.3 in |
| February | 8.6°C 47°F | 1.9°C 35°F | 5.3°C | 67 mm 2.6 in |
| March | 10.4°C 51°F | 3.0°C 37°F | 6.7°C | 66 mm 2.6 in |
| April | 12.6°C 55°F | 4.4°C 40°F | 8.4°C | 56 mm 2.2 in |
| May | 15.6°C 60°F | 6.7°C 44°F | 11.2°C | 61 mm 2.4 in |
| June | 17.9°C 64°F | 9.5°C 49°F | 13.7°C | 65 mm 2.6 in |
| July | 19.4°C 67°F | 11.3°C 52°F | 15.4°C | 72 mm 2.8 in |
| August | 19.1°C 66°F | 11.1°C 52°F | 15.1°C | 81 mm 3.2 in |
| September | 17.1°C 63°F | 9.3°C 49°F | 13.2°C | 69 mm 2.7 in |
| October | 13.6°C 56°F | 6.7°C 44°F | 10.2°C | 89 mm 3.5 in |
| November | 10.3°C 51°F | 4.1°C 39°F | 7.3°C | 84 mm 3.3 in |
| December | 8.1°C 47°F | 2.3°C 36°F | 5.3°C | 92 mm 3.6 in |
| Year | 13.4°C | 6.0°C | 9.7°C | 885 mm |
Where Coalisland’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 Coalisland’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 Armagh, 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 Coalisland’s climate
How warm does Coalisland get in summer?
July is the warmest month, with average highs of 19.4°C (67°F). About 2 days a year reach 25°C (77°F), fewer than 93% of UK towns.
How cold does Coalisland get in winter?
February nights average 1.9°C (35°F). The air drops below freezing on about 36 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Coalisland get?
About 885 mm (35 in) a year, more than 67% of UK towns. December is the wettest month (92 mm) and April the driest (56 mm).
How sunny is it?
The nearest Met Office station with a sunshine record, Armagh (13 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 Coalisland. 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 Coalisland →
Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2026. Contains OS data © Crown copyright and database right 2026 (ONS boundaries). Northern Ireland: Source: NISRA; contains Land & Property Services data and Ordnance Survey of Northern Ireland information, © Crown copyright, licensed under the Open Government Licence v3.0. Scotland: contains National Records of Scotland data, Registers of Scotland data and SEPA data, © Crown copyright / © SEPA 2025, licensed under the Open Government Licence v3.0.