Grendon is drier than 84% of UK towns: 636 mm (25 in) of rain a year
On a normal January night the air cools to about 1.6°C (35°F). Expect the heaviest rain in June and the lightest in March. Summer afternoons here are warmer than in 66% of UK towns. Windscreens need scraping on about 44 mornings a year, the nights the air drops below 0°C.
Met Office 1991–2020 averages for the town itself.
A year in Grendon at a glance
Each month’s typical high and low, in °C.
What a year in Grendon feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 636 mm of rain a year
June is the wettest month and March the driest. About 14 days a year bring 10 mm (0.4 in) or more.
Rain by month
Millimetres
44 air frosts and 13 days of 25°C a year
On about 44 nights a year the air drops below freezing, and on about 2 days it stays below freezing all day. About 13 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 Sutton Bonington
Sutton Bonington is 22 miles north-east of Grendon, 48 m (157 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 | 7.5°C | 1.9°C | 51 mm | 9.3 |
| February | 8.1°C | 1.9°C | 41 mm | 8.6 |
| March | 10.6°C | 3.0°C | 41 mm | 6.0 |
| April | 13.6°C | 4.6°C | 44 mm | 2.9 |
| May | 16.7°C | 7.1°C | 47 mm | 0.9 |
| June | 19.6°C | 10.1°C | 64 mm | 0.0 |
| July | 22.0°C | 12.1°C | 62 mm | 0.0 |
| August | 21.7°C | 12.1°C | 55 mm | 0.0 |
| September | 18.7°C | 10.1°C | 49 mm | 0.0 |
| October | 14.5°C | 7.5°C | 62 mm | 1.2 |
| November | 10.4°C | 4.4°C | 57 mm | 4.4 |
| December | 7.8°C | 2.1°C | 58 mm | 9.2 |
| Year | 14.3°C | 6.4°C | 631 mm | 43 |
Met Office historic station data, Sutton Bonington, 1991–2020 months averaged (a month needs 20 of the 30 years; estimated values counted, missing months left out). Sunshine: Campbell-Stokes recorder.
How Grendon 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 Warwickshire 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 |
|---|---|---|---|
| Grendon | 22.1°C | 1.6°C | 636 mm |
| Baddesley Ensor 0.9 mi | 21.6°C about the same | 1.4°C about the same | 706 mm |
| Polesworth and Dordon 1.5 mi | 22.0°C about the same | 1.6°C about the same | 634 mm |
| Wood End (North Warwickshire) 2.1 mi | 21.6°C about the same | 1.4°C about the same | 706 mm |
| Polesworth 2.3 mi | 22.0°C about the same | 1.6°C about the same | 634 mm |
| Atherstone 2.4 mi | 22.0°C about the same | 1.5°C about the same | 679 mm |
| Warton 2.6 mi | 21.9°C about the same | 1.5°C about the same | 635 mm |
Grendon 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 | 7.2°C 45°F | 1.6°C 35°F | 4.4°C | 54 mm 2.1 in |
| February | 8.1°C 47°F | 1.7°C 35°F | 4.8°C | 42 mm 1.6 in |
| March | 10.5°C 51°F | 2.9°C 37°F | 6.7°C | 41 mm 1.6 in |
| April | 13.6°C 57°F | 4.5°C 40°F | 9.0°C | 44 mm 1.7 in |
| May | 16.9°C 62°F | 7.1°C 45°F | 11.9°C | 49 mm 1.9 in |
| June | 19.6°C 67°F | 9.9°C 50°F | 14.8°C | 61 mm 2.4 in |
| July | 22.1°C 72°F | 12.0°C 54°F | 17.0°C | 58 mm 2.3 in |
| August | 21.6°C 71°F | 11.9°C 53°F | 16.7°C | 57 mm 2.3 in |
| September | 18.6°C 65°F | 10.0°C 50°F | 14.2°C | 52 mm 2.1 in |
| October | 14.4°C 58°F | 7.2°C 45°F | 10.8°C | 60 mm 2.4 in |
| November | 10.2°C 50°F | 4.2°C 39°F | 7.2°C | 59 mm 2.3 in |
| December | 7.6°C 46°F | 1.8°C 35°F | 4.7°C | 59 mm 2.3 in |
| Year | 14.2°C | 6.2°C | 10.2°C | 636 mm |
Where Grendon’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 Grendon’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 Sutton Bonington, 22 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 Grendon’s climate
How warm does Grendon get in summer?
July is the warmest month, with average highs of 22.1°C (72°F). About 13 days a year reach 25°C (77°F), more than 63% of UK towns.
How cold does Grendon get in winter?
January nights average 1.6°C (35°F). The air drops below freezing on about 44 nights a year, and about 2 days a year stay below freezing all day.
How much rain does Grendon get?
About 636 mm (25 in) a year, less than 84% of UK towns. June is the wettest month (61 mm) and March the driest (41 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 Grendon. 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 Grendon →
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