May weather forecast
Simsbury, CT

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The iconic old tower set amid dense tree cover in Simsbury, Connecticut
The iconic old tower set amid dense tree cover in Simsbury, Connecticut

Weather in May

May witnesses a significant leap in temperatures, with highs soaring to an average of 67.6°F (19.8°C), heralding the advent of summer. As the landscape morphs into a lush green canvas punctuated by vibrant flower blooms, May's weather offers the perfect conditions for picnics and garden strolls. Rainfall remains a constant sight. Yet these showers contribute to the growth and vibrancy of nature around. Pre-summer evenings in Simsbury remain cool, making this month an ideal time for a varied range of activities.

Temperature

As May sets, the average high-temperature shows an increase, moving up from 56.1°F (13.4°C) in April to a still refreshing 67.6°F (19.8°C). In the month of May, Simsbury experiences an average low-temperature of 48.7°F (9.3°C).

Humidity

The average relative humidity in May is 74%.

Rainfall

In May, the rain falls for 16.9 days. Throughout May, 2.6" (66mm) of precipitation is accumulated. Throughout the year, in Simsbury, there are 159.6 rainfall days, and 31.97" (812mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows in Simsbury. During 0.2 snowfall days, in May, Simsbury aggregates 0.24" (6mm) of snow. In Simsbury, during the entire year, snow falls for 33.1 days and aggregates up to 18.39" (467mm) of snow.

Daylight

In Simsbury, Connecticut, the average length of the day in May is 14h and 34min.
On the first day of May, sunrise is at 5:46 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 5:18 am and sunset at 8:19 pm EDT.

Sunshine

In Simsbury, Connecticut, the average sunshine in May is 8.4h.

UV index

The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum high UV index of 5 in May translates into the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature in Simsbury?

The high-temperature, in May, in Simsbury, is 67.6°F (19.8°C), while the low-temperature averages to 48.7°F (9.3°C).

What is the average humidity in May in Simsbury?

In May, the average relative humidity in Simsbury, Connecticut, is 74%.

How much does it rain in Simsbury in May?

In Simsbury, Connecticut, in May, during 16.9 rainfall days, 2.6" (66mm) of precipitation is typically accumulated.

What is the last month it snows in Simsbury?

May is the last month it regularly snows in Simsbury. During 0.2 snowfall days, in May, Simsbury aggregates 0.24" (6mm) of snow.

How many hours of daylight does Simsbury have in May?

In Simsbury, the average day length in May is 14h and 34min.

When are sunrise and sunset in May in Simsbury?

On the first day of May, sunrise is at 5:46 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 5:18 am and sunset at 8:19 pm EDT.

How long on average sun shines in May in Simsbury?

The average sunshine duration in May in Simsbury is 8.4h.

What is the UV index intensity in May in Simsbury?

In May, the average daily maximum UV index in Simsbury is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Simsbury, CT

Average temperature in May - Simsbury, CT
  • Average high temperature in May: 67.6°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (32°F).

  • Average low temperature in May: 48.7°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).

Average pressure in May
Simsbury, CT

Average pressure in May - Simsbury, 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
Simsbury, CT

Average wind speed in May - Simsbury, CT
  • Average wind speed in May: 6.5mph

The windiest months (with the highest average wind speed) are January and March (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

Average humidity in May
Simsbury, CT

Average humidity in May - Simsbury, CT
  • Average humidity in May: 74%

The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (71%).

Average rainfall in May
Simsbury, CT

Average rainfall in May - Simsbury, CT
  • Average rainfall in May: 2.6"

The wettest month (with the highest rainfall) is December (3.43").
The driest month (with the least rainfall) is September (1.97").

Average rainfall days in May
Simsbury, CT

Average rainfall days in May - Simsbury, CT
  • Average rainfall days in May: 16.9 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (9.4 days).

Average snowfall in May
Simsbury, CT

Average snowfall in May - Simsbury, CT
  • Average snowfall in May: 0.24"

The month with the highest snowfall is February (5.24").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Simsbury, CT

Average snowfall days in May - Simsbury, CT
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is February (8.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Simsbury, CT

Average daylight in May / Average sunshine in May - Simsbury, CT
  • Average daylight in May: 14h and 4min

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 2min

The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in May
Simsbury, CT

Average sunshine days in May - Simsbury, CT
  • Average sunshine days in May: 12.3 days

The month with the most sunshine days is January (17.1 days).
The month with the least sunshine days is June (11.6 days).

Average UV index in May
Simsbury, CT

Average UV index in May - Simsbury, CT
  • Average UV index in May: 5

The months with the highest UV index are June and July (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
Simsbury, CT

Average cloud cover in May - Simsbury, CT
  • Average cloud cover in May: 47

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in May
Simsbury, CT

Average visibility in May - Simsbury, CT
  • Average visibility in May: 5mi

The months with the highest visibility are April, October, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August and September (5mi).

Simsbury, Connecticut, USA

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