Climate and monthly weather forecastSimsbury, CT
Climate and monthly weather forecast
The climate of Simsbury
Simsbury, located in Connecticut, USA, experiences a humid continental climate - a type of climate defined by the Köppen climate classification as Dfa. This climate type is characterised by no dry season and hot summers. It is primarily shaped by its geographic positioning in the northern hemisphere and the seasonal interplay of various meteorological variables.Throughout the year, the weather in Simsbury fluctuates significantly, presenting an array of different weather conditions from month to month. The climate of this location, like many areas with a continental climate, is highly seasonal with hot summers and cold winters.
Temperature in Simsbury ranges from a high of 82.2°F (27.9°C) in July to a low of 20.1°F (-6.6°C) in January, showcasing the broad climatic spectrum that inhabitants and visitors experience throughout a calendar year. Additionally, the relative humidity fluctuates slightly around 75% throughout the year.
Rainfall levels vary from month to month in Simsbury, with the highest average rainfall of 3.43" (87mm) occurring in December and the lowest 1.97" (50mm) in September. Snowfall is typically observed between November and April, with February recording the highest average snowfall of 5.24" (133mm). Days with snow account disproportionately for winter months with a peak of 8.9 days in February.
Simsbury’s climate also exhibits considerable changes in daylight, sunshine hours, and cloud cover. Average daily sunlight varies from as low as 4.6 hours in February to as high as 10.3 hours between July and August.
The best time to visit Simsbury
Given Simsbury's humid continental climate, the best time for a visit largely depends on people’s personal preference and tolerance for certain weather conditions. Nonetheless, late spring and early summer, specifically May and June appear to offer the most favourable conditions. These months have comfortable average temperatures ranging from 56.1°F (13.4°C) to 75.6°F (24.2°C), modest rainfall levels, extended daylight hours, and greater visibility.The worst time to visit Simsbury
Contrastingly, the winter months of January and February may pose certain challenges for potential visitors owing to the cold temperatures that drop to as low as 20.1°F (-6.6°C). During these months, the town also experiences high levels of snowfall, with February recording an average snowfall of 5.24" (133mm).Spring weather in Simsbury
Spring in Simsbury, running through March to May, heralds a gradual increase in temperature. March still sees cool temperatures, averaging between 28.8°F (-1.8°C) to 42.8°F (6°C), along with a relatively higher incidence of rainfall with 2.56" (65mm) spread over approximately 12.3 days. As we transition to April and May, daily temperatures rise distinctly to a range from 38.8°F (3.8°C) to 67.6°F (19.8°C).Summer weather in Simsbury
Summer in Simsbury, spanning from June to August, brings warm temperatures that peak in July at around 82.2°F (27.9°C). Rainfall during these months is fairly constant, with a little over 2.5" (64mm) of rain falling each month. Cloud cover is typically at its lowest, resulting in longer daylight durations with up to 15.2 hours in June.Autumn weather in Simsbury
The autumn months of September through November feature a noticeable downturn in temperature from summer's warmth to winter’s chill. September still enjoys high temperatures averaging around 72.9°F (22.7°C), but by November, this dips to a high of 48.2°F (9°C) and a low of 34.9°F (1.6°C). Rainfall increases over these months, peaking at an average of 3.19" (81mm) in October.Winter weather in Simsbury
Winter, from December to February, showcases Simsbury's cold and snowy side, with temperature often dropping to the low 20s°F. December records the highest average rainfall of 3.43" (87mm) for the year, while February sees the highest average snowfall of 5.24" (133mm). Despite the shorter daylight hours and higher cloud cover during this period, visibility tends to improve, averaging around 6 miles.Weather in January
The onset of the year in Simsbury, Connecticut is accompanied by a winterscape vista, as residents endure chilly days and colder nights. Marked by constant cloud cover, short days, and minimal sunlight, January ensures visibility stays relatively consistent. Weather in January »Weather in February
February carries forward the winter charm from January, although the average high temperature nudges slightly upward to 35.2°F (1.8°C). As the daylight duration elongates by approximately an hour, the month battles intermittent snow showers, creating a slightly more comfortable climate than the previous month. Weather in February »Weather in March
As spring gets underway in March, Simsbury, Connecticut experiences an uplift in temperatures, reaching a more comfortable range. Breathable air complements the increase in daylight hours, prompting residents to shed their winter layers. Weather in March »Weather in April
April brings in a noticeable transition as the average high temperature escalates to 56.1°F (13.4°C), signalling the true arrival of spring in Simsbury, Connecticut. The sight of melting snow, burgeoning blooms, and extended daylight paints a picture of awakening nature. Weather in April »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. Weather in May »Weather in June
As Simsbury, Connecticut steps into June, the foretaste of summers becomes distinct. The city enters the warmest part of the year with an average high temperature of 75.6°F (24.2°C), extending opportunities for swimming and other water sports. Weather in June »Weather in July
July takes the throne as the hottest month in Simsbury, Connecticut, with high temperatures averaging around 82.2°F (27.9°C). This mid-summer month is characterized by long days, plenty of sunshine, and warm nights, perfect for barbeque gatherings and outdoor camping activities. Weather in July »Weather in August
Maintaining the warmth of July, August in Simsbury offers a high temperature of around 80.2°F (26.8°C). Relatively cooler nights offer a soothing contrast to the day's warmth, making this month an enjoyable experience. Although the heat is persistent, an occasional cloud cover provides brief respites. Weather in August »Weather in September
September brings a delightful coolness to Simsbury, Connecticut, with an average high temperature decreasing to around 72.9°F (22.7°C). The transition from hot summers to mild autumns takes center stage, coloring the city with enigmatic hues. Weather in September »Weather in October
Continuing the downward temperature trend, October in Simsbury witnesses an average high temperature further dipping to 60.1°F (15.6°C). Fall foliage makes for a vibrant landscape seasoned with the colors of autumn. The weather remains crisp and moderately cool in comparison to the previous months. Weather in October »Weather in November
November in Simsbury introduces a chill in the air, taking the city closer to winter, with average high temperatures falling to 48.2°F (9°C). This penultimate month showcases the last traces of the autumnal spectacle, making way for Simsbury's upcoming winter wonderland. Weather in November »Weather in December
With December, winter is in full swing in Simsbury, Connecticut, as the overall temperature slides further down to an average high of 37.6°F (3.1°C). The quiet fall of snow showers, coupled with decorated streets and houses, ushers in the festive spirit. Weather in December »Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January is the month when Simsbury, Connecticut, sees the average lowest temperatures, with a high of 32°F (0°C) and a low of 20.1°F (-6.6°C).
In Simsbury, Connecticut, during the entire year, the rain falls for 159.6 days and collects up to 31.97" (812mm) of precipitation.
Months with snowfall are January through May, October through December.
In Simsbury, Connecticut, during the entire year, snow falls for 33.1 days and aggregates up to 18.39" (467mm) of snow.
The months with the lowest UV index in Simsbury are January through March, November and December, with an average maximum UV index of 2.
The most humid month in Simsbury, Connecticut, is February, with an average relative humidity of 80%.
The month with the most snowfall in Simsbury, Connecticut, is February, when snow falls for 8.9 days and typically aggregates up to 5.24" (133mm) of snow.
February has the least sunshine of the year in Simsbury, with an average of 4.6h of sunshine.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Simsbury, Connecticut, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
April is the least humid month in Simsbury, Connecticut, with an average relative humidity of 71%.
June through September are months without snowfall.
The month with the longest days in Simsbury, Connecticut, is June, with an average of 15h and 12min of daylight.
The months with the highest UV index are June and July, with an average maximum UV index of 6.
The temperatures in Simsbury reach their highest averages in July, with highs of 82.2°F (27.9°C) and lows of 63.1°F (17.3°C).
July and August, with an average of 10.3h of sunshine, are months with the most sunshine.
The month with the least rainfall in Simsbury, Connecticut, is September, when the rain falls for 12.6 days and typically collects 1.97" (50mm) of precipitation.
The month with the most rainfall is December, when the rain falls for 10.5 days and typically aggregates up to 3.43" (87mm) of precipitation.
The month with the shortest days in Simsbury is December, with an average of 9h and 12min of daylight.
Average temperature
Simsbury, CT
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).
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
Simsbury, CT
- Average pressure in January:
30.03"Hg - Average pressure in February:
30.01"Hg - Average pressure in March:
30.04"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.06"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
Simsbury, CT
- Average wind speed in January:
8.3mph - Average wind speed in February:
8.1mph - Average wind speed in March:
8.3mph - Average wind speed in April:
7.8mph - Average wind speed in May:
6.5mph - Average wind speed in June:
5.8mph
- Average wind speed in July:
5.2mph - Average wind speed in August:
5.2mph - Average wind speed in September:
5.8mph - Average wind speed in October:
6.9mph - Average wind speed in November:
7.4mph - Average wind speed in December:
7.8mph
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
Simsbury, CT
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (71%).
Average rainfall
Simsbury, CT
- Average rainfall in January:
2.32" - Average rainfall in February:
2.36" - Average rainfall in March:
2.56" - Average rainfall in April:
2.76" - Average rainfall in May:
2.6" - Average rainfall in June:
2.72"
- Average rainfall in July:
2.76" - Average rainfall in August:
2.52" - Average rainfall in September:
1.97" - Average rainfall in October:
3.19" - Average rainfall in November:
2.8" - Average rainfall in December:
3.43"
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
Simsbury, CT
- Average rainfall days in January:
9.4 days - Average rainfall days in February:
9.5 days - Average rainfall days in March:
12.3 days - Average rainfall days in April:
14.9 days - Average rainfall days in May:
16.9 days - Average rainfall days in June:
16.7 days
- Average rainfall days in July:
17.3 days - Average rainfall days in August:
14.9 days - Average rainfall days in September:
12.6 days - Average rainfall days in October:
14.1 days - Average rainfall days in November:
10.5 days - Average rainfall days in December:
10.5 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
Simsbury, CT
- Average snowfall in January:
3.74" - Average snowfall in February:
5.24" - Average snowfall in March:
4.17" - Average snowfall in April:
0.79" - Average snowfall in May:
0.24" - Average snowfall in June:
0"
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
Simsbury, CT
- Average snowfall days in January:
8.2 days - Average snowfall days in February:
8.9 days - Average snowfall days in March:
6.8 days - Average snowfall days in April:
0.8 days - Average snowfall days in May:
0.2 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.2 days - Average snowfall days in November:
1.9 days - Average snowfall days in December:
6.1 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 / Average sunshine
Simsbury, CT
- Average daylight in January:
9h and 30min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 36min - Average daylight in June:
15h and 12min
- Average daylight in July:
14h and 54min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 48min - Average daylight in December:
9h and 12min
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 January:
4h and 54min - Average sunshine in February:
4h and 36min - Average sunshine in March:
6h and 6min - Average sunshine in April:
8h and 12min - Average sunshine in May:
8h and 24min - Average sunshine in June:
9h and 18min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
10h and 18min - Average sunshine in September:
8h and 36min - Average sunshine in October:
5h and 48min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 42min
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
Simsbury, CT
- Average sunshine days in January:
17.1 days - Average sunshine days in February:
13.1 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
13.4 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
11.6 days
- Average sunshine days in July:
12.3 days - Average sunshine days in August:
14.2 days - Average sunshine days in September:
15.7 days - Average sunshine days in October:
14.5 days - Average sunshine days in November:
17 days - Average sunshine days in December:
15.7 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
Simsbury, CT
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
Simsbury, CT
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
Simsbury, CT
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).
