With a population of around 5,700, Roscommon sits in Connacht, Ireland. The city operates in the GMT/IST time zone.
Recent weather here gives a sense of typical conditions: in 2025, Roscommon recorded a mean annual temperature of 51°F, ranging from 26°F lows in January to 85°F highs in July, with about 45 inches of precipitation across the year.
View historical weather for Roscommon · More cities in Connacht