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Weather & Climate in Randalstown, United Kingdom
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Randalstown experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 40°F in January while summers reach 59°F in July / relatively mild seasonal variation. The area gets 262 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 40.9 inches. The city sits at an elevation of 131 feet.
Temperature
40°F Jan (4°C)
59°F Jul (15°C)
| Annual Average | 48.6°F |
| 10% below US avg | |
| January Average | 40°F (4°C) |
| July Average | 59°F (15°C) |
| Sunny Days | 262 days/yr |
Geography
| Elevation | 131 ft (40 m) |
| Area | 275.8 sq mi (714.3 km²) |
| Population Density | 20/sq mi |
| Coordinates | 54.7500°N, 6.3000°W |
| Timezone | Europe/London |
Precipitation & Snow
Air Quality
Earthquake History
4 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.5.
| May 3, 1998 | Scotland, United Kingdom | M3.5 | 147 km | 15 km |
| Jan 26, 1990 | 34 km N of Isle of Islay, United Kingdom | M3.0 | 149 km | 10 km |
| Aug 27, 1992 | 33 km NNE of Isle of Islay, United Kingdom | M2.7 | 147 km | 10 km |
| Nov 1, 2017 | 2 km NNW of Tarbert, United Kingdom | M2.6 | 138 km | 7 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 40°F (4°C) | 4.3 in | Coldest, Wettest |
| February | 40°F (5°C) | 3.1 in | |
| March | 43°F (6°C) | 3.5 in | |
| April | 46°F (8°C) | 2.6 in | |
| May | 51°F (11°C) | 2.4 in | Driest |
| June | 56°F (13°C) | 2.6 in | |
| July | 59°F (15°C) | 2.8 in | Warmest |
| August | 59°F (15°C) | 3.5 in | |
| September | 55°F (13°C) | 3.7 in | |
| October | 50°F (10°C) | 4.2 in | |
| November | 44°F (7°C) | 4.1 in | |
| December | 41°F (5°C) | 4.1 in |
Randalstown has a seasonal temperature swing of 19°F / from 40°F in January to 59°F in July. Total annual precipitation is 40.9 inches, with January being the wettest month (4.3") and May the driest (2.4").