Photo: Jonathan Clitheroe · CC BY-SA 2.0Grimethorpe is drier than 79% of UK towns: 652 mm (26 in) of rain a year
High summer brings afternoon highs near 21.4°C (71°F). Only 20°C separates winter nights from summer afternoons. Frosty nights are scarcer than in 75% of UK towns. Radiators earn their keep from November to April, the months that average under 10°C.
Met Office 1991–2020 averages for the town itself.
A year in Grimethorpe at a glance
Each month’s typical high and low, in °C.
What a year in Grimethorpe feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 652 mm of rain a year
June is the wettest month and February the driest. About 15 days a year bring 10 mm (0.4 in) or more. 34th wettest of 63 South Yorkshire towns of 2,500+.
Rain by month
Millimetres
Sunshine by month
Hours of bright sunshine at Sheffield
35 air frosts and 11 days of 25°C a year
On about 35 nights a year the air drops below freezing, and on about 1 days it stays below freezing all day. About 11 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 Sheffield
Sheffield is 14 miles south of Grimethorpe, 131 m (430 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 | 7.0°C | 2.2°C | 76 mm | 7.2 | 49 |
| February | 7.7°C | 2.2°C | 67 mm | 7.0 | 75 |
| March | 10.1°C | 3.4°C | 60 mm | 3.6 | 119 |
| April | 13.1°C | 5.2°C | 59 mm | 1.1 | 150 |
| May | 16.4°C | 7.8°C | 55 mm | 0.1 | 193 |
| June | 19.2°C | 10.8°C | 78 mm | 0.0 | 175 |
| July | 21.3°C | 12.8°C | 62 mm | 0.0 | 194 |
| August | 20.8°C | 12.6°C | 65 mm | 0.0 | 179 |
| September | 17.8°C | 10.5°C | 63 mm | 0.0 | 135 |
| October | 13.7°C | 7.8°C | 79 mm | 0.4 | 95 |
| November | 9.8°C | 4.8°C | 85 mm | 2.4 | 59 |
| December | 7.3°C | 2.6°C | 87 mm | 6.5 | 48 |
| Year | 13.7°C | 6.9°C | 834 mm | 28 | 1,469 |
Met Office historic station data, Sheffield, 1991–2020 months averaged (a month needs 20 of the 30 years; estimated values counted, missing months left out). Sunshine: Kipp & Zonen recorder.
How Grimethorpe 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 South Yorkshire 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 |
|---|---|---|---|
| Grimethorpe | 21.4°C | 1.8°C | 652 mm |
| Brierley 1.3 mi | 21.2°C about the same | 1.7°C about the same | 654 mm |
| Cudworth and Shafton 1.5 mi | 21.4°C about the same | 1.8°C about the same | 653 mm |
| Great Houghton 2.0 mi | 21.3°C about the same | 1.9°C about the same | 630 mm |
| South Hiendley 2.3 mi | 21.2°C about the same | 1.7°C about the same | 654 mm |
| South Kirkby 2.4 mi | 21.4°C about the same | 1.8°C about the same | 646 mm |
| Hemsworth 2.5 mi | 21.2°C about the same | 1.7°C about the same | 651 mm |
Grimethorpe 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 | 7.1°C 45°F | 1.8°C 35°F | 4.5°C | 50 mm 2.0 in |
| February | 7.9°C 46°F | 2.0°C 36°F | 4.9°C | 43 mm 1.7 in |
| March | 10.2°C 50°F | 3.0°C 37°F | 6.6°C | 44 mm 1.7 in |
| April | 13.2°C 56°F | 4.8°C 41°F | 9.0°C | 47 mm 1.8 in |
| May | 16.3°C 61°F | 7.3°C 45°F | 11.8°C | 47 mm 1.8 in |
| June | 19.2°C 67°F | 10.3°C 50°F | 14.8°C | 67 mm 2.7 in |
| July | 21.4°C 71°F | 12.4°C 54°F | 16.9°C | 59 mm 2.3 in |
| August | 21.2°C 70°F | 12.3°C 54°F | 16.7°C | 59 mm 2.3 in |
| September | 18.2°C 65°F | 10.2°C 50°F | 14.2°C | 51 mm 2.0 in |
| October | 14.1°C 57°F | 7.4°C 45°F | 10.7°C | 61 mm 2.4 in |
| November | 10.0°C 50°F | 4.5°C 40°F | 7.2°C | 63 mm 2.5 in |
| December | 7.5°C 45°F | 2.2°C 36°F | 4.9°C | 61 mm 2.4 in |
| Year | 13.9°C | 6.5°C | 10.2°C | 652 mm |
Where Grimethorpe’s numbers come from
Averages over 30 years, not a forecast.
- Mean temperature, rain and day counts: HadUK-Grid 1991–2020 averages for the 1 Met Office 2 km grid square whose centre lies inside Grimethorpe’s built-up area.
- 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 Sheffield, 14 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 Grimethorpe’s climate
How warm does Grimethorpe get in summer?
July is the warmest month, with average highs of 21.4°C (71°F). About 11 days a year reach 25°C (77°F), fewer than 51% of UK towns.
How cold does Grimethorpe get in winter?
January nights average 1.8°C (35°F). The air drops below freezing on about 35 nights a year, and about 1 days a year stay below freezing all day.
How much rain does Grimethorpe get?
About 652 mm (26 in) a year, less than 79% of UK towns. June is the wettest month (67 mm) and February the driest (43 mm).
How sunny is it?
The nearest Met Office station with a sunshine record, Sheffield (14 miles away), averages 1,469 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 Grimethorpe. 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 Grimethorpe →
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