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Weather & Climate in Alton, United Kingdom
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Alton experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 40°F in January while summers reach 61°F in July. The area gets 229 sunny days per year, above the national average. Annual precipitation totals 44.5 inches. The area receives 5.7 inches of snow annually. The city sits at an elevation of 341 feet.
Temperature
40°F Jan (5°C)
61°F Jul (16°C)
| Annual Average | 51.7°F |
| 4% below US avg | |
| January Average | 40°F (5°C) |
| July Average | 61°F (16°C) |
| Sunny Days | 229 days/yr |
Geography
| Elevation | 341 ft (104 m) |
| Area | 261.5 sq mi (677.4 km²) |
| Population Density | 63/sq mi |
| Coordinates | 51.1493°N, 0.9747°W |
| Timezone | Europe/London |
Precipitation & Snow
Air Quality
Earthquake History
26 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.6.
| Oct 6, 1999 | 34 km NNW of Fécamp, France | M4.6 | 150 km | 1 km |
| Apr 28, 2007 | 1 km WNW of Lympne, United Kingdom | M4.6 | 139 km | 10 km |
| Sep 23, 2000 | 1 km WSW of Warwick, United Kingdom | M4.0 | 133 km | 13 km |
| Jul 14, 2011 | 62 km SSE of Ventnor, United Kingdom | M3.9 | 115 km | 10 km |
| Jan 29, 2004 | 2 km E of North Petherton, United Kingdom | M3.7 | 140 km | 7 km |
| May 12, 1994 | 4 km S of Shipston on Stour, United Kingdom | M3.7 | 107 km | 10 km |
| Jan 29, 2004 | 2 km E of North Petherton, United Kingdom | M3.6 | 140 km | 7 km |
| Sep 9, 1995 | 0 km WNW of East Wittering, United Kingdom | M3.3 | 43 km | 10 km |
| Jan 29, 2004 | 2 km E of North Petherton, United Kingdom | M3.3 | 140 km | 7 km |
| Feb 27, 2019 | 3 km SE of Dorking, United Kingdom | M3.3 | 48 km | 10 km |
| May 19, 2019 | 7 km ESE of Swanage, United Kingdom | M3.0 | 89 km | 10 km |
| Nov 26, 1991 | 50 km N of Urville-Nacqueville, France | M3.0 | 124 km | 10 km |
| Jun 17, 1999 | 7 km NNE of Ross on Wye, United Kingdom | M3.0 | 140 km | 10 km |
| Aug 26, 2002 | 40 km NNW of Étretat, France | M3.0 | 140 km | 4 km |
| Mar 18, 2001 | 8 km W of Marlborough, United Kingdom | M2.9 | 68 km | 10 km |
| Mar 23, 1998 | 11 km W of Chickerell, United Kingdom | M2.9 | 133 km | 5 km |
| Jan 27, 2015 | 1 km ENE of Winchester, United Kingdom | M2.9 | 24 km | 3 km |
| Feb 11, 1998 | 4 km SE of Newport, United Kingdom | M2.9 | 145 km | 10 km |
| Jul 16, 2005 | 3 km WSW of Southwater, United Kingdom | M2.9 | 44 km | 5 km |
| Apr 1, 2018 | 4 km E of Holmwood, United Kingdom | M2.7 | 50 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 40°F (5°C) | 3.8 in | Wettest |
| February | 40°F (4°C) | 2.5 in | Coldest |
| March | 43°F (6°C) | 2.8 in | |
| April | 46°F (8°C) | 2.2 in | |
| May | 53°F (12°C) | 2.2 in | |
| June | 58°F (14°C) | 2.4 in | |
| July | 61°F (16°C) | 2.0 in | Driest |
| August | 62°F (16°C) | 2.4 in | Warmest |
| September | 57°F (14°C) | 3.1 in | |
| October | 51°F (11°C) | 3.5 in | |
| November | 45°F (7°C) | 3.7 in | |
| December | 42°F (5°C) | 3.7 in |
Alton has a seasonal temperature swing of 22°F / from 40°F in February to 62°F in August. Total annual precipitation is 34.2 inches, with January being the wettest month (3.8") and July the driest (2.0").