Grantham

What is the climate like in Grantham?

The best time to visit Grantham is typically July – August, with trip comfort peaking in August (7.0/10). Grantham is warmest in July, when daily highs average 72°F (22°C), and coolest in January, when lows fall to about 36°F (2°C). The wettest month is typically October and the driest is April; the year sees roughly 30 in (763 mm) of precipitation.

• Best time to visitJuly – August — comfort peaks in August (7.0/10)
• Warmest monthJuly — average high 72°F (22°C)
• Coolest monthJanuary — average low 36°F (2°C)
• Wettest monthOctober (3.1 in (78 mm))
• Driest monthApril (1.8 in (45 mm))
• Annual precipitation30 in (763 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromNottingham: Watnall, 42 km away (1959-2026)