Climate and monthly weather forecastBethlehem, CT
Climate and monthly weather forecast
Weather in January
January, like December, is a freezing cold winter month in Bethlehem, Connecticut, with temperature in the range of an average low of 19.8°F (-6.8°C) and an average high of 31.5°F (-0.3°C). January tends to be the coldest month, with temperatures averaging a daily high of 31.5°F (-0.3°C) and a low of 19.8°F (-6.8°C). Weather in January »Weather in February
The last month of the winter, February, is a wintry month in Bethlehem, Connecticut, with temperature in the range of an average low of 20.7°F (-6.3°C) and an average high of 34.7°F (1.5°C). The arrival of February marks a slight shift to an average high-temperature of an icy 34.7°F (1.5°C) from January's 31.5°F (-0.3°C). Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Bethlehem, Connecticut, with an average temperature varying between 28.2°F (-2.1°C) and 42.8°F (6°C). March's onset witnesses a minor shift in the average high-temperature, moving from a cold 34.7°F (1.5°C) in February to a chilly 42.8°F (6°C). Weather in March »Weather in April
April is a refreshing spring month in Bethlehem, Connecticut, with an average temperature varying between 38.5°F (3.6°C) and 55.8°F (13.2°C). April's arrival coincides with a rise in the average high-temperature, moving from March's frosty 42.8°F (6°C) to a moderate 55.8°F (13.2°C). Weather in April »Weather in May
May, the last month of the spring in Bethlehem, is a refreshing month, with an average temperature ranging between min 48.4°F (9.1°C) and max 67.6°F (19.8°C). In Bethlehem, the average high-temperature in May rises, from a moderate 55.8°F (13.2°C) in April, to an enjoyable 67.6°F (19.8°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Bethlehem, Connecticut, with an average temperature ranging between max 75.2°F (24°C) and min 55.8°F (13.2°C). As Bethlehem welcomes June, the average high-temperature displays a subtle shift, adjusting from a refreshing 67.6°F (19.8°C) in May to a moderately hot 75.2°F (24°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Bethlehem, Connecticut, with temperature in the range of an average low of 61.9°F (16.6°C) and an average high of 81.7°F (27.6°C). Bethlehem's temperatures peak on average in July, reaching 81.7°F (27.6°C) at their highest and 61.9°F (16.6°C) at their lowest. The heat index value for July is calculated to be a tropical 87.8°F (31°C). Weather in July »Weather in August
August, the last month of the summer in Bethlehem, is also a moderately hot month, with an average temperature varying between 60.6°F (15.9°C) and 79.7°F (26.5°C). The shift into August finds Bethlehem at an average high-temperature of a still warm 79.7°F (26.5°C), closely comparable to July's conditions. Weather in August »Weather in September
The first month of the autumn, September, is also an agreeable month in Bethlehem, Connecticut, with an average temperature ranging between max 72.3°F (22.4°C) and min 54.1°F (12.3°C). Bethlehem's September weather shows a modest shift in high-temperatures, falling from August's moderately hot 79.7°F (26.5°C) to an agreeable 72.3°F (22.4°C). Weather in September »Weather in October
October, like September, is another mild autumn month in Bethlehem, Connecticut, with temperature in the range of an average high of 59.9°F (15.5°C) and an average low of 45.3°F (7.4°C). October involves a decrease in temperature, down from an agreeable 72.3°F (22.4°C) in September to a mild 59.9°F (15.5°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Bethlehem, Connecticut, with an average temperature varying between 47.5°F (8.6°C) and 34.2°F (1.2°C). November's onset corresponds with a shift in the average high-temperature, moving from a refreshing 59.9°F (15.5°C) in October to a frosty 47.5°F (8.6°C). Weather in November »Weather in December
December, the first month of the winter in Bethlehem, is also an icy month, with an average temperature varying between 37.2°F (2.9°C) and 26.4°F (-3.1°C). As November shifts into December, a slight alteration in temperatures is observed, with average highs reducing from a frosty 47.5°F (8.6°C) to an icy 37.2°F (2.9°C). 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
In Bethlehem, January is known for its average lowest temperatures, reaching a high of 31.5°F (-0.3°C) and a low of 19.8°F (-6.8°C).
In Bethlehem, Connecticut, during the entire year, the rain falls for 161.7 days and collects up to 34.65" (880mm) of precipitation.
January through May, October through December are months with snowfall in Bethlehem.
Throughout the year, there are 39.4 snowfall days, and 24.37" (619mm) of snow is accumulated.
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
The most humid month in Bethlehem, Connecticut, is February, with an average relative humidity of 81%.
February is the month with the most snowfall. Snow falls for 9.3 days and accumulates 6.1" (155mm) of snow.
The month with the least sunshine in Bethlehem is February, with an average of 4.4h of sunshine.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Bethlehem, 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.
With an average relative humidity of 73%, April is the least humid month.
June through September are months without snowfall in Bethlehem, Connecticut.
The month with the longest days in Bethlehem, Connecticut, is June, with an average of 15h and 6min of daylight.
June and July, with an average maximum UV index of 6, are months with the highest UV index in Bethlehem, Connecticut.
July, known for its average high temperature of 81.7°F (27.6°C) and an average low temperature of 61.9°F (16.6°C), is the warmest month in Bethlehem, Connecticut.
With an average of 10.2h of sunshine, July has the most sunshine of the year.
The month with the least rainfall in Bethlehem is September, when the rain falls for 13.5 days and typically collects 2.24" (57mm) of precipitation.
The month with the most rainfall in Bethlehem is December, when the rain falls for 10.8 days and typically aggregates up to 3.62" (92mm) of precipitation.
December has the shortest days of the year in Bethlehem, Connecticut, with an average of 9h and 12min of daylight.
Average temperature
Bethlehem, CT
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (31.5°F).
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure
Bethlehem, CT
- Average pressure in January:
30.04"Hg - Average pressure in February:
30.02"Hg - Average pressure in March:
30.05"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
Bethlehem, CT
- Average wind speed in January:
8.1mph - Average wind speed in February:
8mph - Average wind speed in March:
8.1mph - Average wind speed in April:
7.7mph - Average wind speed in May:
6.3mph - Average wind speed in June:
5.7mph
- Average wind speed in July:
5.1mph - Average wind speed in August:
5mph - Average wind speed in September:
5.6mph - Average wind speed in October:
6.8mph - Average wind speed in November:
7.3mph - Average wind speed in December:
7.7mph
The windiest months (with the highest average wind speed) are January and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity
Bethlehem, CT
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (73%).
Average rainfall
Bethlehem, CT
- Average rainfall in January:
2.28" - Average rainfall in February:
2.28" - Average rainfall in March:
2.64" - Average rainfall in April:
2.87" - Average rainfall in May:
2.83" - Average rainfall in June:
3.23"
- Average rainfall in July:
3.35" - Average rainfall in August:
2.95" - Average rainfall in September:
2.24" - Average rainfall in October:
3.35" - Average rainfall in November:
2.99" - Average rainfall in December:
3.62"
The wettest month (with the highest rainfall) is December (3.62").
The driest month (with the least rainfall) is September (2.24").
Average rainfall days
Bethlehem, CT
- Average rainfall days in January:
8.1 days - Average rainfall days in February:
8.1 days - Average rainfall days in March:
12.6 days - Average rainfall days in April:
14.8 days - Average rainfall days in May:
17.1 days - Average rainfall days in June:
17.7 days
- Average rainfall days in July:
17.4 days - Average rainfall days in August:
16.7 days - Average rainfall days in September:
13.5 days - Average rainfall days in October:
14.4 days - Average rainfall days in November:
10.5 days - Average rainfall days in December:
10.8 days
The month with the highest number of rainy days is June (17.7 days).
The months with the least rainy days are January and February (8.1 days).
Average snowfall
Bethlehem, CT
The month with the highest snowfall is February (6.1").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Bethlehem, CT
- Average snowfall days in January:
9.8 days - Average snowfall days in February:
9.3 days - Average snowfall days in March:
7.7 days - Average snowfall days in April:
1.6 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:
0.6 days - Average snowfall days in November:
2.8 days - Average snowfall days in December:
7.4 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Bethlehem, CT
- Average daylight in January:
9h and 36min - 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 30min - Average daylight in June:
15h and 6min
- Average daylight in July:
14h and 48min - 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 54min - Average daylight in December:
9h and 12min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
4h and 48min - Average sunshine in February:
4h and 24min - Average sunshine in March:
5h and 54min - Average sunshine in April:
8h and 6min - Average sunshine in May:
8h and 12min - Average sunshine in June:
9h and 12min
- Average sunshine in July:
10h and 12min - Average sunshine in August:
10h and 6min - Average sunshine in September:
8h and 30min - Average sunshine in October:
5h and 42min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days
Bethlehem, CT
- Average sunshine days in January:
16.5 days - Average sunshine days in February:
13.9 days - Average sunshine days in March:
13.8 days - Average sunshine days in April:
13.5 days - Average sunshine days in May:
11.9 days - Average sunshine days in June:
10.5 days
- Average sunshine days in July:
11.9 days - Average sunshine days in August:
12 days - Average sunshine days in September:
14.2 days - Average sunshine days in October:
13.9 days - Average sunshine days in November:
16.6 days - Average sunshine days in December:
15 days
The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is June (10.5 days).
Average UV index
Bethlehem, 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
Bethlehem, CT
The months with the most cloud cover are February and March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility
Bethlehem, CT
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
