No extremes in Llansantffraid-ym-Mechain: its weather tracks the middle of UK towns
About 849 mm (33 in) of rain falls in a typical year; July afternoons reach 21.0°C (70°F) and January nights drop to 2.0°C (36°F). From frosty January to warm July, readings climb 19°C. Winters are mild: January nights here are milder than in 68% of UK towns. Frost greets about 39 mornings a year, so leave time to clear the car.
Met Office 1991–2020 averages for the town itself.
A year in Llansantffraid-ym-Mechain at a glance
Each month’s typical high and low, in °C.
What a year in Llansantffraid-ym-Mechain feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 849 mm of rain a year
December is the wettest month and July the driest. About 21 days a year bring 10 mm (0.4 in) or more.
Rain by month
Millimetres
Sunshine by month
Hours of bright sunshine at Shawbury
39 air frosts and 10 days of 25°C a year
On about 39 nights a year the air drops below freezing, and on about under 1 days it stays below freezing all day. About 10 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 Shawbury
Shawbury is 21 miles east of Llansantffraid-ym-Mechain, 72 m (236 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 | 7.5°C | 1.2°C | 57 mm | 11.7 | 50 |
| February | 8.1°C | 1.2°C | 43 mm | 10.8 | 71 |
| March | 10.3°C | 2.3°C | 43 mm | 8.2 | 109 |
| April | 13.2°C | 3.9°C | 47 mm | 4.4 | 148 |
| May | 16.3°C | 6.7°C | 54 mm | 0.9 | 181 |
| June | 19.1°C | 9.6°C | 59 mm | 0.0 | 173 |
| July | 21.1°C | 11.5°C | 58 mm | 0.0 | 179 |
| August | 20.7°C | 11.4°C | 64 mm | 0.0 | 156 |
| September | 18.1°C | 9.3°C | 61 mm | 0.0 | 127 |
| October | 14.2°C | 6.6°C | 69 mm | 1.8 | 92 |
| November | 10.3°C | 3.5°C | 61 mm | 6.7 | 59 |
| December | 7.7°C | 1.3°C | 66 mm | 11.2 | 48 |
| Year | 13.9°C | 5.7°C | 682 mm | 56 | 1,392 |
Met Office historic station data, Shawbury, 1991–2020 months averaged (a month needs 20 of the 30 years; estimated values counted, missing months left out). Sunshine: Kipp & Zonen recorder.
How Llansantffraid-ym-Mechain 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 Powys 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 |
|---|---|---|---|
| Llansantffraid-ym-Mechain | 21.0°C | 2.0°C | 849 mm |
| Llanymynech 2.7 mi | 21.3°C about the same | 2.0°C about the same | 732 mm |
| Four Crosses 3.2 mi | 21.3°C about the same | 2.0°C about the same | 724 mm |
| Pant 3.4 mi | 20.9°C about the same | 1.7°C about the same | 892 mm |
| Llanfyllin 5.1 mi | 20.1°C 0.9°C cooler | 1.3°C 0.7°C colder | 1,136 mm |
| Guilsfield 5.4 mi | 20.8°C about the same | 2.1°C about the same | 892 mm |
| Morda 6.1 mi | 20.8°C about the same | 1.9°C about the same | 886 mm |
Llansantffraid-ym-Mechain 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 | 7.7°C 46°F | 2.0°C 36°F | 4.8°C | 85 mm 3.3 in |
| February | 8.2°C 47°F | 2.0°C 36°F | 5.1°C | 66 mm 2.6 in |
| March | 10.5°C 51°F | 3.2°C 38°F | 6.9°C | 57 mm 2.3 in |
| April | 13.5°C 56°F | 4.8°C 41°F | 9.1°C | 57 mm 2.2 in |
| May | 16.6°C 62°F | 7.3°C 45°F | 11.9°C | 63 mm 2.5 in |
| June | 19.3°C 67°F | 10.1°C 50°F | 14.7°C | 67 mm 2.6 in |
| July | 21.0°C 70°F | 12.0°C 54°F | 16.5°C | 56 mm 2.2 in |
| August | 20.6°C 69°F | 11.9°C 53°F | 16.2°C | 65 mm 2.5 in |
| September | 18.0°C 64°F | 9.8°C 50°F | 13.9°C | 63 mm 2.5 in |
| October | 14.1°C 57°F | 7.2°C 45°F | 10.7°C | 86 mm 3.4 in |
| November | 10.5°C 51°F | 4.5°C 40°F | 7.5°C | 86 mm 3.4 in |
| December | 8.0°C 46°F | 2.4°C 36°F | 5.2°C | 99 mm 3.9 in |
| Year | 14.0°C | 6.4°C | 10.2°C | 849 mm |
Where Llansantffraid-ym-Mechain’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 Llansantffraid-ym-Mechain’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 Shawbury, 21 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 Llansantffraid-ym-Mechain’s climate
How warm does Llansantffraid-ym-Mechain get in summer?
July is the warmest month, with average highs of 21.0°C (70°F). About 10 days a year reach 25°C (77°F), fewer than 55% of UK towns.
How cold does Llansantffraid-ym-Mechain get in winter?
January nights average 2.0°C (36°F). The air drops below freezing on about 39 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Llansantffraid-ym-Mechain get?
About 849 mm (33 in) a year, more than 62% of UK towns. December is the wettest month (99 mm) and July the driest (56 mm).
How sunny is it?
The nearest Met Office station with a sunshine record, Shawbury (21 miles away), averages 1,392 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 Llansantffraid-ym-Mechain. 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 Llansantffraid-ym-Mechain →
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