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.

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• Hartford - May »
  In Hartford, during the entire year, snow falls for 21.5 days and aggregates up to 4.45" (113mm) of snow. In Hartford, during the entire year, the rain falls for 113.2 days and collects up to 10.24" (260mm) of precipitation.
• New Haven - May »
  On the last day of the month, in New Haven sunrise is at 5:21 am and sunset at 8:17 pm EDT. In May, in New Haven the rain falls for 17.2 days.
• Stamford - May »
  On the first day of May in Stamford sunrise is at 5:51 am and sunset at 7:50 pm. The months with the highest humidity in Stamford are February, May, June and December, with an average relative humidity of 75%.
• Bridgeport - May »
  May and June, with an average relative humidity of 76%, are most humid months in Bridgeport, Connecticut. On the last day of the month, in Bridgeport, sunrise is at 5:22 am and sunset at 8:18 pm EDT.
• Waterbury - May »
  On the last day of the month, in Waterbury sunrise is at 5:20 am and sunset at 8:18 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 snow does not fall in May through October. February, May and June, with an average relative humidity of 76%, are the most humid months in Norwalk, Connecticut.
• Danbury - May »
  On the last day of the month, in Danbury, Connecticut, sunrise is at 5:23 am and sunset at 8:19 pm EDT. In Danbury snow does not fall in May through September.
• New Britain - May »
  In New Britain in May, it is raining for 17.8 days, with typically 2.64" (67mm) of accumulated precipitation. During 0.1 snowfall days, in May, New Britain aggregates 0.28" (7mm) of snow.
• Bristol - May »
  On the last day of the month, in Bristol, sunrise is at 5:20 am and sunset at 8:18 pm EDT. In Bristol, during the entire year, snow falls for 33.9 days and aggregates up to 18.43" (468mm) of snow.
• Meriden - May »
  In Meriden in May, it is raining for 17.1 days, with typically 2.68" (68mm) of accumulated precipitation. During 0.1 snowfall days, in May, Meriden aggregates 0.43" (11mm) of snow.
• Milford - May »
  February, May and June, with an average relative humidity of 76%, are most humid months in Milford, Connecticut. Milford, Connecticut, in May shows a temperature shift, moving from an average high of a fresh 54.9°F (12.7°C) in April to a comfortable 65.8°F (18.8°C).
• West Haven - May »
  In West Haven, Connecticut, during the entire year, the rain falls for 167.2 days and collects up to 35.71" (907mm) of precipitation. February, May and June, with an average relative humidity of 76%, are the most humid months in West Haven.