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Climate in Mark · Met Office 1991–2020 averages

Midwinter lows in Mark stay above those of 88% of UK towns

Sunny July days climb to about 21.9°C (71°F). Warm days come often: about 13 a year reach 25°C, more than in 63% of UK towns. The gap between a January night and a July afternoon is 19°C. Keep the boiler serviced for the months from November to April, which average under 10°C.

July afternoons: warmer than 60% of UK towns
January nights: milder than 88% of UK towns
Rain a year: wetter than 54% of UK towns

Met Office 1991–2020 averages for the town itself.

A year in Mark at a glance

Each month’s typical high and low, in °C.

Jan9°C3°C
Feb9°C3°CColdest nights
Mar11°C4°C
Apr14°C5°C
May18°C8°C
Jun20°C11°C
Jul22°C13°CWarmest
Aug22°C13°C
Sep19°C11°C
Oct16°C8°CWettest
Nov now12°C5°C
Dec9°C3°C
A normal year

What a year in Mark feels like

Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.

Winter
9°C / 3°C
48°F / 37°F · 33 air frosts a year
Spring
14°C / 6°C
58°F / 42°F · 158 mm of rain
Summer
21°C / 12°C
70°F / 54°F · 13 days of 25°C+ a year
Autumn
15°C / 8°C
60°F / 46°F · 241 mm of rain, the wettest season
Best months to be outsideMayJunJulAugSepHighs of 17–27°C (63–81°F) and nights of 8°C (46°F) or more
Rain

About 801 mm of rain a year

October is the wettest month and February the driest. About 20 days a year bring 10 mm (0.4 in) or more.

801 mm
Rain a year (32 in)
Wetter than 54% of UK towns
20
Days a year with 10 mm of rain or more
1,524 hrs
Sunshine a year at Yeovilton
19 miles away

Rain by month

Millimetres

88 mm
JFMAMJJASOND

Sunshine by month

Hours of bright sunshine at Yeovilton

192 h
JFMAMJJASOND
Frost & warm days

33 air frosts and 13 days of 25°C a year

On about 33 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).

33
Air frosts a year (below 0°C)
Fewer frosts than 80% of UK towns
under 1
Days that stay below 0°C
13
Days of 25°C (77°F) or more
More warm days than 63% of UK towns

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.

Weather station

The Met Office station at Yeovilton

Yeovilton is 19 miles south-east of Mark, 20 m (66 ft) above sea level. It is the nearest of the 37 long-running stations the Met Office publishes in full.

MonthHighLowRainAir frostsSun (hours)
January8.6°C2.0°C70 mm10.058
February9.0°C1.8°C51 mm9.777
March11.2°C3.0°C49 mm7.6114
April13.9°C4.5°C52 mm3.8163
May17.1°C7.4°C47 mm0.5191
June19.9°C10.3°C58 mm0.0188
July21.9°C12.2°C50 mm0.0192
August21.6°C12.2°C61 mm0.0175
September19.2°C10.0°C53 mm0.0142
October15.3°C7.6°C81 mm1.8104
November11.5°C4.4°C80 mm5.569
December9.0°C2.3°C77 mm10.352
Year14.9°C6.5°C728 mm491,524

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.

Compared with other towns

How Mark 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 Somerset towns that size.

July afternoons21.9°C (71°F)
Warmer than 60% of UK towns
January nights2.6°C (37°F)
Milder than 88% of UK towns
Rain a year801 mm (32 in)
Wetter than 54% of UK towns
Air frosts a year33 nights
Fewer frosts than 80% of UK towns
Days of 25°C or more13 days
More warm days than 63% of UK towns
Next door

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.

TownJuly highJanuary lowRain a year
Mark21.9°C2.6°C801 mm
Wedmore 3.3 mi21.9°C about the same2.4°C about the same768 mm
Highbridge 3.8 mi22.1°C about the same2.8°C about the same779 mm
Burnham-on-Sea 4.5 mi22.1°C about the same2.9°C about the same781 mm
Woolavington 4.7 mi22.1°C about the same2.7°C about the same736 mm
Axbridge 5.2 mi21.2°C 0.6°C cooler2.4°C about the same1,036 mm
Puriton 5.5 mi22.1°C about the same3.0°C about the same788 mm
Month by month

Mark weather by month

Average daily high and low, mean temperature and rain, 1991–2020, for the town itself (the Met Office’s HadUK-Grid).

MonthHighLowMeanRain
January8.7°C 48°F2.6°C 37°F5.4°C72 mm 2.8 in
February9.0°C 48°F2.6°C 37°F5.8°C51 mm 2.0 in
March11.4°C 52°F3.7°C 39°F7.5°C53 mm 2.1 in
April14.4°C 58°F5.3°C 42°F9.8°C53 mm 2.1 in
May17.6°C 64°F8.0°C 46°F12.7°C52 mm 2.0 in
June20.0°C 68°F11.0°C 52°F15.5°C58 mm 2.3 in
July21.9°C 71°F12.7°C 55°F17.3°C66 mm 2.6 in
August21.7°C 71°F12.7°C 55°F17.2°C77 mm 3.0 in
September19.1°C 66°F10.5°C 51°F14.9°C66 mm 2.6 in
October15.5°C 60°F7.9°C 46°F11.7°C88 mm 3.4 in
November11.8°C 53°F5.0°C 41°F8.4°C87 mm 3.4 in
December9.2°C 49°F2.8°C 37°F6.0°C80 mm 3.1 in
Year15.0°C7.1°C11.0°C801 mm
Sources

Where Mark’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 Mark’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, 19 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 Mark’s climate

How warm does Mark get in summer?

July is the warmest month, with average highs of 21.9°C (71°F). About 13 days a year reach 25°C (77°F), more than 63% of UK towns.

How cold does Mark get in winter?

February nights average 2.6°C (37°F). The air drops below freezing on about 33 nights a year, and about under 1 days a year stay below freezing all day.

How much rain does Mark get?

About 801 mm (32 in) a year, more than 54% of UK towns. October is the wettest month (88 mm) and February the driest (51 mm).

How sunny is it?

The nearest Met Office station with a sunshine record, Yeovilton (19 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 Mark. 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 Mark →

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.