Belfast climate

Typical historical weather for Belfast, United States, averaged across 10 years of hourly climate data. Pick a date for a specific day.

Want today's actual conditions instead? See the current forecast for Belfast.

Annual average

8°C

across all months

Warmest month

24.8°C

Jul average high

Coolest month

-8.3°C

Jan average low

Annual rainfall

1168mm

total per year

Monthly averages

Average daily high/low temperature (band) and monthly rainfall (bars).

● Avg high● Avg low▮ Rainfall

Records on file

Hottest day

33.9°C

24 June 2025

Coldest day

-27.3°C

4 February 2023

Wettest day

64.2mm

25 October 2017

Windiest day

10.5m/s

18 December 2023