Hartford Weather in May
Hartford in May averages 22°C (72°F) during the day and 10°C (50°F) at night. Keep in mind that quite a bit of rainfall is expected this month.
Rainfall in Hartford in May
Based on our climate data of the past 30 years, about 13 days of rain are anticipated, with 96 mm (3.8 in) on average. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Hartford in May
Weather in Hartford is at its perfect in May. Highs reach 22°C (72°F), while nights settle around 10°C (50°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights cool down to 10°C (50°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Hartford in May
Expect a lot of sunshine this month, with about 258 hours of sun. These sunny conditions add to the overall experience.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May and September typically offer the best weather for Hartford.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Hartford's climate page.
Hartford Temperature in May
Min Temperature
10°C (50°F)
Max Temperature
22°C (72°F)
Chance of Rain
44%
Precipitation
96 mm (3.8 in)
Rainy days
13 days
Humidity
63%
Sunshine
258 hours
Percentage Sunshine
57%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Hartford typically rise from around 19°C (66°F) at the start of May to approximately 24°C (75°F) by the end. Nights are cool, with lows typically ranging from 8°C (46°F) to 13°C (55°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Hartford in May
Browse day-by-day weather records for Hartford spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Hartford historical weather extremes in May
Based on 50 years of weather observations in Hartford between 1976 and 2026, these are the recorded extremes.
- Hartford recorded its highest May temperature of 37°C (99°F) on May 20, 1996.
- The lowest overnight temperature recorded in May was -1°C (30°F) (May 7, 2001).
- The wettest day in May Hartford was on May 12, 2006 with 57 mm (2.2 in) of precipitation.
Best Places in the United States of America in May
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in May →
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What to Wear in Hartford in May
For Hartford in May, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Hartford in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Hartford's climate page.
Temperature Rainfall Sunshine Humidity
See the full Hartford climate overview or explore weather in the United States of America.
