Caston gets more days of 25 degrees or more than 85% of UK towns
In January the night’s low is typically 1.4°C (34°F). The gap between a January night and a July afternoon is 22°C. By rainfall alone, it ranks drier than 82% of UK towns. Central heating does most of its work from November to April, in months below 10°C on average.
Met Office 1991–2020 averages for the town itself.
A year in Caston at a glance
Each month’s typical high and low, in °C.
What a year in Caston feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 646 mm of rain a year
October is the wettest month and May the driest. About 15 days a year bring 10 mm (0.4 in) or more.
Rain by month
Millimetres
48 air frosts and 18 days of 25°C a year
On about 48 nights a year the air drops below freezing, and on about under 1 days it stays below freezing all day. About 18 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 39 miles south-west of Caston, 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 Caston 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 Norfolk 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 |
|---|---|---|---|
| Caston | 22.7°C | 1.4°C | 646 mm |
| Griston 1.2 mi | 22.6°C about the same | 1.3°C about the same | 684 mm |
| Watton 2.7 mi | 22.5°C about the same | 1.4°C about the same | 682 mm |
| Saham Toney 4.4 mi | 22.5°C about the same | 1.5°C about the same | 713 mm |
| Hingham 4.9 mi | 22.3°C about the same | 1.5°C about the same | 678 mm |
| Attleborough 5.9 mi | 22.5°C about the same | 1.6°C about the same | 641 mm |
| Shipdham 6.0 mi | 22.6°C about the same | 1.5°C about the same | 707 mm |
Caston 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 | 7.4°C 45°F | 1.4°C 34°F | 4.3°C | 52 mm 2.0 in |
| February | 8.1°C 47°F | 1.1°C 34°F | 4.6°C | 48 mm 1.9 in |
| March | 10.7°C 51°F | 2.3°C 36°F | 6.5°C | 51 mm 2.0 in |
| April | 13.9°C 57°F | 4.0°C 39°F | 8.9°C | 40 mm 1.6 in |
| May | 17.3°C 63°F | 6.8°C 44°F | 12.1°C | 40 mm 1.6 in |
| June | 20.1°C 68°F | 9.7°C 49°F | 14.9°C | 62 mm 2.5 in |
| July | 22.7°C 73°F | 11.8°C 53°F | 17.2°C | 49 mm 1.9 in |
| August | 22.6°C 73°F | 11.8°C 53°F | 17.2°C | 62 mm 2.4 in |
| September | 19.4°C 67°F | 9.6°C 49°F | 14.5°C | 54 mm 2.1 in |
| October | 15.0°C 59°F | 7.0°C 45°F | 11.0°C | 63 mm 2.5 in |
| November | 10.6°C 51°F | 3.8°C 39°F | 7.2°C | 63 mm 2.5 in |
| December | 7.7°C 46°F | 1.6°C 35°F | 4.6°C | 62 mm 2.4 in |
| Year | 14.6°C | 5.9°C | 10.3°C | 646 mm |
Where Caston’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 Caston’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, 39 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 Caston’s climate
How warm does Caston get in summer?
July is the warmest month, with average highs of 22.7°C (73°F). About 18 days a year reach 25°C (77°F), more than 85% of UK towns.
How cold does Caston get in winter?
February nights average 1.1°C (34°F). The air drops below freezing on about 48 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Caston get?
About 646 mm (25 in) a year, less than 82% of UK towns. October is the wettest month (63 mm) and May the driest (40 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 Caston. 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 Caston →
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