Photo: John Yaxley · CC BY-SA 2.0More days reach 25 degrees in Stewartby than in 91% of UK towns
The depth of winter brings overnight lows near 1.8°C (35°F). Rain is light here, less than falls on 88% of UK towns. Winter and summer sit 21°C apart. Garden chairs stay out from June to September, the months with highs of 19–22°C.
Met Office 1991–2020 averages for the town itself.
A year in Stewartby at a glance
Each month’s typical high and low, in °C.
What a year in Stewartby feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 620 mm of rain a year
October is the wettest month and March the driest. About 10 days a year bring 10 mm (0.4 in) or more. 11th wettest of 33 Bedfordshire towns of 2,500+.
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 29 miles north-east of Stewartby, 26 m (85 ft) above sea level. It is the nearest of the 37 long-running stations the Met Office publishes in full; at that distance read it for sunshine and the station’s own record, not as the town’s figures.
| 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 Stewartby 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 |
|---|---|---|---|
| Stewartby | 22.5°C | 1.8°C | 620 mm |
| Houghton Conquest 1.4 mi | 22.7°C about the same | 1.6°C about the same | 621 mm |
| Wootton 1.8 mi | 22.9°C about the same | 1.8°C about the same | 582 mm |
| Marston Moretaine 1.9 mi | 22.9°C about the same | 1.8°C about the same | 562 mm |
| Wixams 1.9 mi | 23.1°C 0.7°C warmer | 1.6°C about the same | 558 mm |
| Wilstead 2.7 mi | 22.6°C about the same | 1.5°C about the same | 603 mm |
| Kempston 3.1 mi | 22.9°C about the same | 1.8°C about the same | 581 mm |
Stewartby 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 | 1.8°C 35°F | 4.8°C | 48 mm 1.9 in |
| February | 8.0°C 46°F | 1.4°C 34°F | 4.7°C | 44 mm 1.7 in |
| March | 10.7°C 51°F | 2.5°C 37°F | 6.6°C | 37 mm 1.5 in |
| April | 13.8°C 57°F | 4.1°C 39°F | 9.0°C | 46 mm 1.8 in |
| May | 17.0°C 63°F | 6.8°C 44°F | 11.9°C | 49 mm 1.9 in |
| June | 19.9°C 68°F | 9.7°C 49°F | 14.8°C | 50 mm 2.0 in |
| July | 22.5°C 72°F | 11.8°C 53°F | 17.2°C | 48 mm 1.9 in |
| August | 22.2°C 72°F | 11.8°C 53°F | 17.0°C | 59 mm 2.3 in |
| September | 19.1°C 66°F | 9.7°C 49°F | 14.4°C | 58 mm 2.3 in |
| October | 14.7°C 58°F | 7.1°C 45°F | 10.9°C | 67 mm 2.6 in |
| November | 10.4°C 51°F | 4.0°C 39°F | 7.2°C | 59 mm 2.3 in |
| December | 7.7°C 46°F | 1.7°C 35°F | 4.7°C | 56 mm 2.2 in |
| Year | 14.5°C | 6.0°C | 10.3°C | 620 mm |
Where Stewartby’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 Stewartby’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 Cambridge NIAB, 29 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 Stewartby’s climate
How warm does Stewartby get in summer?
July is the warmest month, with average highs of 22.5°C (72°F). About 20 days a year reach 25°C (77°F), more than 91% of UK towns.
How cold does Stewartby get in winter?
February nights average 1.4°C (34°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 Stewartby get?
About 620 mm (24 in) a year, less than 88% of UK towns. October is the wettest month (67 mm) and March the driest (37 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 Stewartby. 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 Stewartby →
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.