Thornford has milder winter nights than 72% of UK towns
July afternoons average 21.8°C (71°F). Expect the heaviest rain in November and the lightest in June. It is a wet place: more rain falls here than on 63% of UK towns. 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 Thornford at a glance
Each month’s typical high and low, in °C.
What a year in Thornford feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 857 mm of rain a year
November is the wettest month and June the driest. About 25 days a year bring 10 mm (0.4 in) or more.
Rain by month
Millimetres
Sunshine by month
Hours of bright sunshine at Yeovilton
45 air frosts and 13 days of 25°C a year
On about 45 nights a year the air drops below freezing, and on about under 1 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 Yeovilton
Yeovilton is 6.9 miles north-west of Thornford, 20 m (66 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 | 8.6°C | 2.0°C | 70 mm | 10.0 | 58 |
| February | 9.0°C | 1.8°C | 51 mm | 9.7 | 77 |
| March | 11.2°C | 3.0°C | 49 mm | 7.6 | 114 |
| April | 13.9°C | 4.5°C | 52 mm | 3.8 | 163 |
| May | 17.1°C | 7.4°C | 47 mm | 0.5 | 191 |
| June | 19.9°C | 10.3°C | 58 mm | 0.0 | 188 |
| July | 21.9°C | 12.2°C | 50 mm | 0.0 | 192 |
| August | 21.6°C | 12.2°C | 61 mm | 0.0 | 175 |
| September | 19.2°C | 10.0°C | 53 mm | 0.0 | 142 |
| October | 15.3°C | 7.6°C | 81 mm | 1.8 | 104 |
| November | 11.5°C | 4.4°C | 80 mm | 5.5 | 69 |
| December | 9.0°C | 2.3°C | 77 mm | 10.3 | 52 |
| Year | 14.9°C | 6.5°C | 728 mm | 49 | 1,524 |
Met Office historic station data, Yeovilton, 1991–2020 months averaged (a month needs 20 of the 30 years; estimated values counted, missing months left out). Sunshine: Kipp & Zonen recorder.
How Thornford 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 Dorset 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 |
|---|---|---|---|
| Thornford | 21.8°C | 2.1°C | 857 mm |
| Barwick and Stoford 2.4 mi | 22.0°C about the same | 2.3°C about the same | 830 mm |
| Sherborne 2.8 mi | 21.8°C about the same | 2.0°C about the same | 857 mm |
| Yeovil 3.7 mi | 21.8°C about the same | 2.2°C about the same | 859 mm |
| Milborne Port 5.5 mi | 21.7°C about the same | 1.9°C about the same | 907 mm |
| Ilchester 8.0 mi | 22.4°C 0.6°C warmer | 2.0°C about the same | 786 mm |
| Henstridge 8.3 mi | 22.1°C about the same | 2.0°C about the same | 826 mm |
Thornford 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 | 8.4°C 47°F | 2.1°C 36°F | 5.3°C | 89 mm 3.5 in |
| February | 8.7°C 48°F | 1.9°C 35°F | 5.3°C | 65 mm 2.6 in |
| March | 11.0°C 52°F | 2.9°C 37°F | 7.0°C | 56 mm 2.2 in |
| April | 13.9°C 57°F | 4.4°C 40°F | 9.2°C | 58 mm 2.3 in |
| May | 17.1°C 63°F | 7.1°C 45°F | 12.1°C | 58 mm 2.3 in |
| June | 19.8°C 68°F | 10.0°C 50°F | 14.9°C | 50 mm 2.0 in |
| July | 21.8°C 71°F | 11.8°C 53°F | 16.9°C | 53 mm 2.1 in |
| August | 21.5°C 71°F | 11.9°C 53°F | 16.7°C | 68 mm 2.7 in |
| September | 19.0°C 66°F | 9.8°C 50°F | 14.4°C | 64 mm 2.5 in |
| October | 15.1°C 59°F | 7.4°C 45°F | 11.2°C | 95 mm 3.8 in |
| November | 11.2°C 52°F | 4.4°C 40°F | 7.8°C | 102 mm 4.0 in |
| December | 8.7°C 48°F | 2.3°C 36°F | 5.5°C | 100 mm 3.9 in |
| Year | 14.7°C | 6.3°C | 10.5°C | 857 mm |
Where Thornford’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 Thornford’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 Yeovilton, 6.9 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 Thornford’s climate
How warm does Thornford get in summer?
July is the warmest month, with average highs of 21.8°C (71°F). About 13 days a year reach 25°C (77°F), more than 62% of UK towns.
How cold does Thornford get in winter?
February nights average 1.9°C (35°F). The air drops below freezing on about 45 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Thornford get?
About 857 mm (34 in) a year, more than 63% of UK towns. November is the wettest month (102 mm) and June the driest (50 mm).
How sunny is it?
The nearest Met Office station with a sunshine record, Yeovilton (6.9 miles away), averages 1,524 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 Thornford. 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 Thornford →
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.