May weather forecast
Connecticut, USA

May ushers in warmer and more consistent spring weather in Connecticut. With the winter months firmly in the past, temperatures continue to rise, and the state begins to experience the effects of the Bermuda High, which brings hot weather conditions.

Average high temperatures become pleasantly warm, reflecting the continued progression toward summer. Northern regions might still experience slightly cooler temperatures, especially during the evenings, but the overall climate becomes more unified across the state.

Rainfall maintains consistency with previous months, contributing to the annual range of 44" (1118mm) to 48" (1219mm). Thunderstorms may start to appear more frequently, particularly in late May, often accompanied by lightning and thunder.

The risk of icy road conditions and coastal fog becomes negligible, reflecting the state's continued shift toward summer weather patterns. Humidity begins to increase but remains at comfortable levels, especially when compared to the peak humidity of late summer.

May's weather in Connecticut is characterized by growth, warmth, and a gradual increase in weather phenomena associated with summer, such as thunderstorms. The variations between coastal and inland areas become less pronounced, and the state as a whole embraces the pleasant conditions of late spring. The transition from the cooler temperatures of April to the warmth of May is marked, setting the stage for the hot and humid summer months ahead.

---

• Hartford - May »
  On the last day of the month, in Hartford, sunrise is at 5:18 am and sunset at 8:18 pm EDT. In Hartford, during the entire year, snow falls for 21.5 days and aggregates up to 4.45" (113mm) of snow.
• New Haven - May »
  On the last day of the month, in New Haven sunrise is at 5:20 am and sunset at 8:18 pm EDT. In New Haven, during May, the rain falls for 17.2 days and regularly aggregates up to 2.76" (70mm) of precipitation.
• Stamford - May »
  In Stamford, Connecticut, during May, the rain falls for 17.2 days and regularly aggregates up to 3.11" (79mm) of precipitation. Preceding the onset of Stamford's hottest season, May serves as the perfect blend of pleasant temperature and inviting daylight hours.
• Bridgeport - May »
  Throughout the year, in Bridgeport there are 170.1 rainfall days, and 37.76" (959mm) of precipitation is accumulated. In Bridgeport snow does not fall in May through October.
• Waterbury - May »
  On the last day of the month, in Waterbury, sunrise is at 5:20 am and sunset at 8:19 pm EDT. In Waterbury, during the entire year, snow falls for 34.9 days and aggregates up to 20.35" (517mm) of snow.
• Norwalk - May »
  In Norwalk in May, during 17.1 rainfall days, 3.11" (79mm) of precipitation is typically accumulated. In Norwalk snow does not fall in May through October.
• Danbury - May »
  In Danbury in May, during 13.7 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. In Danbury, during the entire year, the rain falls for 123.7 days and collects up to 11.65" (296mm) of precipitation.
• New Britain - May »
  In New Britain, during May, the rain falls for 17.8 days and regularly aggregates up to 2.64" (67mm) of precipitation. In New Britain, during the entire year, snow falls for 31.7 days and aggregates up to 17.2" (437mm) of snow.
• Bristol - May »
  In Bristol, during May, the rain falls for 18.3 days and regularly aggregates up to 2.87" (73mm) of precipitation. Throughout the year, in Bristol, there are 33.9 snowfall days, and 18.43" (468mm) of snow is accumulated.
• Meriden - May »
  On the last day of the month, in Meriden, sunrise is at 5:19 am and sunset at 8:18 pm EDT. During 0.1 snowfall days, in May, Meriden aggregates 0.43" (11mm) of snow.
• Milford - May »
  On the last day of the month, in Milford, sunrise is at 5:21 am and sunset at 8:18 pm EDT. February, May and June, with an average relative humidity of 76%, are most humid months in Milford.
• West Haven - May »
  On the last day of the month, in West Haven sunrise is at 5:21 am and sunset at 8:18 pm EDT. February, May and June, with an average relative humidity of 76%, are most humid months in West Haven, Connecticut.