May weather forecastHartford, CT
May
Weather in May
May is when Hartford, Connecticut enters the threshold of summer. A surge in temperatures reflects the imminent arrival of the hot season. Temperatures, particularly, mark an upward trend, registering an average high of 68.7°F (20.4°C). Notably, humidity starts to take its toll during this month, often leading to a sultry, uncomfortable feel. Amidst this change, May in Hartford still retains an air of freshness, largely attributed to its vibrant and lush greenscape.Temperature
Hartford, Connecticut, in May shows a temperature shift, moving from an average high of a moderate 56.5°F (13.6°C) in April to a pleasant 68.7°F (20.4°C). Nighttime temperatures hover around an average low of 49.5°F (9.7°C) in May.Humidity
In May, the average relative humidity is 74%.Rainfall
In Hartford, in May, during 10.8 rainfall days, 0.91" (23mm) of precipitation is typically accumulated. In Hartford, during the entire year, the rain falls for 113.2 days and collects up to 10.24" (260mm) of precipitation.Snowfall
Months with snowfall are January through May, November and December. May is the last month it regularly snows in Hartford. During 0.2 snowfall days, in May, Hartford aggregates 0.04" (1mm) of snow. In Hartford, during the entire year, snow falls for 21.5 days and aggregates up to 4.45" (113mm) of snow.Daylight
The average length of the day in May is 14h and 34min.On the first day of the month, sunrise is at 5:46 am and sunset at 7:49 pm. On the last day of May, sunrise is at 5:18 am and sunset at 8:18 pm EDT.
Sunshine
In Hartford, the average sunshine in May is 8.5h.UV index
In Hartford, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 5 in May converts into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Hartford, CT
- Average high temperature in May: 68.7°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (33.1°F).
- Average low temperature in May: 49.5°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (21.4°F).
Average pressure in May
Hartford, CT
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Hartford, CT
- Average wind speed in May: 6.5mph
The windiest months (with the highest average wind speed) are January and March (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in May
Hartford, CT
- Average humidity in May: 74%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (70%).
Average rainfall in May
Hartford, CT
- Average rainfall in May: 0.91"
The wettest months (with the highest rainfall) are June and July (1.06").
The driest month (with the least rainfall) is September (0.43").
Average rainfall days in May
Hartford, CT
- Average rainfall days in May: 10.8 days
The month with the highest number of rainy days is July (11.8 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in May
Hartford, CT
- Average snowfall in May: 0.04"
The month with the highest snowfall is February (1.14").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in May
Hartford, CT
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is February (5.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Hartford, CT
- Average daylight in May: 14h and 36min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 8h and 30min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in May
Hartford, CT
- Average sunshine days in May: 16.9 days
The months with the most sunshine days are January and November (20.4 days).
The month with the least sunshine days is June (16.3 days).
Average UV index in May
Hartford, CT
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in May
Hartford, CT
- Average cloud cover in May: 46
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in May
Hartford, CT
- Average visibility in May: 5mi
The months with the highest visibility are January, March, April, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August and September (5mi).
