Dry weather: only 588 mm (23 in) a year falls on Southill, less than on 95% of UK towns
On a normal July day the thermometer tops out near 23.0°C (73°F). Temperatures cover 22°C across the year, low to high. By July afternoons alone, it runs hotter than 94% of UK towns. Garden chairs stay out from June to September, the months with highs of 20–23°C.
Met Office 1991–2020 averages for the town itself.
A year in Southill at a glance
Each month’s typical high and low, in °C.
What a year in Southill feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 588 mm of rain a year
November is the wettest month and March the driest. About 11 days a year bring 10 mm (0.4 in) or more.
Rain by month
Millimetres
45 air frosts and 20 days of 25°C a year
On about 45 nights a year the air drops below freezing, and on about 1 days it stays below freezing all day. About 20 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 Cambridge NIAB
Cambridge NIAB is 22 miles north-east of Southill, 26 m (85 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 | 7.7°C | 1.9°C | 49 mm | 9.0 |
| February | 8.3°C | 1.8°C | 36 mm | 8.7 |
| March | 11.0°C | 3.1°C | 33 mm | 5.2 |
| April | 14.1°C | 4.7°C | 38 mm | 2.6 |
| May | 17.4°C | 7.4°C | 43 mm | 0.6 |
| June | 20.4°C | 10.5°C | 49 mm | 0.0 |
| July | 23.1°C | 12.6°C | 48 mm | 0.0 |
| August | 22.9°C | 12.6°C | 56 mm | 0.0 |
| September | 19.6°C | 10.5°C | 51 mm | 0.0 |
| October | 15.1°C | 7.9°C | 59 mm | 0.7 |
| November | 10.7°C | 4.5°C | 53 mm | 3.7 |
| December | 8.0°C | 2.2°C | 50 mm | 9.2 |
| Year | 14.9°C | 6.6°C | 563 mm | 40 |
Met Office historic station data, Cambridge NIAB, 1991–2020 months averaged (a month needs 20 of the 30 years; estimated values counted, missing months left out). Sunshine: Campbell-Stokes recorder.
How Southill 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 Bedfordshire 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 |
|---|---|---|---|
| Southill | 23.0°C | 1.6°C | 588 mm |
| Shefford 1.9 mi | 22.7°C about the same | 1.8°C about the same | 589 mm |
| Clifton 2.2 mi | 22.8°C about the same | 1.9°C about the same | 588 mm |
| Langford 2.3 mi | 23.1°C about the same | 1.8°C about the same | 554 mm |
| Upper Caldecote 2.6 mi | 23.0°C about the same | 1.7°C about the same | 571 mm |
| Henlow 2.8 mi | 22.8°C about the same | 1.9°C about the same | 588 mm |
| Meppershall 3.4 mi | 22.9°C about the same | 1.8°C about the same | 583 mm |
Southill 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 | 7.8°C 46°F | 1.6°C 35°F | 4.7°C | 47 mm 1.9 in |
| February | 8.4°C 47°F | 1.5°C 35°F | 5.0°C | 39 mm 1.5 in |
| March | 11.2°C 52°F | 2.7°C 37°F | 7.0°C | 34 mm 1.4 in |
| April | 14.3°C 58°F | 4.2°C 40°F | 9.2°C | 41 mm 1.6 in |
| May | 17.5°C 63°F | 6.9°C 44°F | 12.2°C | 50 mm 2.0 in |
| June | 20.5°C 69°F | 9.8°C 50°F | 15.1°C | 47 mm 1.9 in |
| July | 23.0°C 73°F | 12.0°C 54°F | 17.5°C | 53 mm 2.1 in |
| August | 22.8°C 73°F | 12.0°C 54°F | 17.4°C | 59 mm 2.3 in |
| September | 19.7°C 67°F | 9.8°C 50°F | 14.7°C | 52 mm 2.0 in |
| October | 15.2°C 59°F | 7.2°C 45°F | 11.2°C | 57 mm 2.3 in |
| November | 10.7°C 51°F | 4.0°C 39°F | 7.4°C | 60 mm 2.4 in |
| December | 8.1°C 47°F | 1.8°C 35°F | 4.9°C | 49 mm 1.9 in |
| Year | 14.9°C | 6.1°C | 10.5°C | 588 mm |
Where Southill’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 Southill’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 Cambridge NIAB, 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 Southill’s climate
How warm does Southill get in summer?
July is the warmest month, with average highs of 23.0°C (73°F). About 20 days a year reach 25°C (77°F), more than 90% of UK towns.
How cold does Southill get in winter?
February nights average 1.5°C (35°F). The air drops below freezing on about 45 nights a year, and about 1 days a year stay below freezing all day.
How much rain does Southill get?
About 588 mm (23 in) a year, less than 95% of UK towns. November is the wettest month (60 mm) and March the driest (34 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 Southill. 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 Southill →
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.