Climate and monthly weather forecastNorthumberland, PA
Climate and monthly weather forecast
Weather in January
January, the same as December, is a wintry winter month in Northumberland, Pennsylvania, with temperature in the range of an average low of 20.1°F (-6.6°C) and an average high of 32.2°F (0.1°C). January is Northumberland's coldest month, registering average high temperatures of 32.2°F (0.1°C) and lows of 20.1°F (-6.6°C). Weather in January »Weather in February
February, the last month of the winter in Northumberland, is also an icy month, with temperature in the range of an average low of 22.3°F (-5.4°C) and an average high of 36.7°F (2.6°C). Northumberland experiences an average high-temperature of a still icy 36.7°F (2.6°C) in February, marking an insignificant shift from 32.2°F (0.1°C) in January. Weather in February »Weather in March
March, the first month of the spring in Northumberland, is a frosty month, with temperature in the range of an average high of 46°F (7.8°C) and an average low of 29.7°F (-1.3°C). The transition from February to March brings a temperature rise, with average high-temperatures increasing from an icy 36.7°F (2.6°C) to a chilly 46°F (7.8°C). Weather in March »Weather in April
April in Northumberland, Pennsylvania, is a refreshing spring month, with temperature in the range of an average high of 58.1°F (14.5°C) and an average low of 39.9°F (4.4°C). April shows a rise in the average high-temperature, moving from March's frosty 46°F (7.8°C) to a refreshing 58.1°F (14.5°C). Weather in April »Weather in May
May, the last month of the spring in Northumberland, is a pleasant month, with an average temperature ranging between min 49.3°F (9.6°C) and max 69.4°F (20.8°C). An escalation in the average high-temperature is seen with the onset of May, moving from a mild 58.1°F (14.5°C) in April to a pleasant 69.4°F (20.8°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Northumberland, Pennsylvania, with an average temperature ranging between min 56.5°F (13.6°C) and max 76.6°F (24.8°C). June's onset witnesses a minor shift in the average high-temperature, moving from a pleasant 69.4°F (20.8°C) in May to a moderately hot 76.6°F (24.8°C). Weather in June »Weather in July
July, like June, in Northumberland, Pennsylvania, is a moderately hot summer month, with an average temperature fluctuating between 61.2°F (16.2°C) and 82.2°F (27.9°C). July, noted for its average high-temperature of 82.2°F (27.9°C) and an average low-temperature of 61.2°F (16.2°C), is considered the warmest month. July's average heat index is estimated at a tropical 89.6°F (32°C). Weather in July »Weather in August
August, the last month of the summer in Northumberland, is also a moderately hot month, with an average temperature fluctuating between 59.4°F (15.2°C) and 80.2°F (26.8°C). Northumberland's shift into August is marked by a subtle change to a still moderately hot 80.2°F (26.8°C) from July's 82.2°F (27.9°C) in temperature. Weather in August »Weather in September
September, the first month of the autumn in Northumberland, is also an agreeable month, with temperature in the range of an average low of 53.4°F (11.9°C) and an average high of 73.2°F (22.9°C). With the onset of September, the average high-temperature subtly recedes from August's moderately hot 80.2°F (26.8°C) to a pleasant 73.2°F (22.9°C). Weather in September »Weather in October
October, the same as September, is another enjoyable autumn month in Northumberland, Pennsylvania, with temperature in the range of an average high of 61.2°F (16.2°C) and an average low of 44.2°F (6.8°C). During Northumberland's transition into October, the average high-temperature lessens, moving from a pleasant 73.2°F (22.9°C) in September to an enjoyable 61.2°F (16.2°C). Weather in October »Weather in November
November, the last month of the autumn in Northumberland, is another chilly month, with an average temperature varying between 33.8°F (1°C) and 48.2°F (9°C). The move into November indicates a reduction in the average high-temperature, down from October's comfortable 61.2°F (16.2°C) to a frosty 48.2°F (9°C). Weather in November »Weather in December
The first month of the winter, December, is also a wintry month in Northumberland, Pennsylvania, with an average temperature fluctuating between 38.8°F (3.8°C) and 28°F (-2.2°C). A shift in the average high-temperature occurs in December, reducing from a chilly 48.2°F (9°C) in November to an icy 38.8°F (3.8°C). Weather in December »Updated: Aug 8, 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
The coldest temperatures occur during January, when averages reach a peak of 32.2°F (0.1°C) and a low of 20.1°F (-6.6°C).
In Northumberland, during the entire year, the rain falls for 133.4 days and collects up to 13.15" (334mm) of precipitation.
January through May, November and December are months with snowfall.
In Northumberland, during the entire year, snow falls for 32.1 days and aggregates up to 4.76" (121mm) of snow.
The months with the least sunshine are January and February, with an average of 4.2h of sunshine.
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.
The most humid month in Northumberland is February, with an average relative humidity of 82%.
The month with the most snowfall is February, when snow falls for 9.2 days and typically aggregates up to 1.46" (37mm) of snow.
The months with the lowest humidity are March and April, with an average relative humidity of 76%.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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.
In Northumberland, snow does not fall in June through October.
June has the longest days of the year, with an average of 15h and 6min of daylight.
Northumberland experiences its average highest temperatures in July, reaching a peak of 82.2°F (27.9°C) and a minimum of 61.2°F (16.2°C).
July is the month with the most rainfall. Rain falls for 13.8 days and accumulates 1.65" (42mm) of precipitation.
July has the most sunshine of the year, with an average of 10.4h of sunshine.
The month with the highest UV index is July, with an average maximum UV index of 6.
September is the month with the least rainfall. Rain falls for 9.2 days and accumulates 0.75" (19mm) of precipitation.
The month with the shortest days is December, with an average of 9h and 18min of daylight.
Average temperature
Northumberland, PA
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (32.2°F).
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure
Northumberland, PA
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.07"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Northumberland, PA
- Average wind speed in January:
7.5mph - Average wind speed in February:
7.5mph - Average wind speed in March:
7.8mph - Average wind speed in April:
7.9mph - Average wind speed in May:
6.2mph - Average wind speed in June:
5.7mph
- Average wind speed in July:
4.7mph - Average wind speed in August:
4.6mph - Average wind speed in September:
5.2mph - Average wind speed in October:
6.3mph - Average wind speed in November:
6.6mph - Average wind speed in December:
7.1mph
The windiest month (with the highest average wind speed) is April (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity
Northumberland, PA
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are March and April (76%).
Average rainfall
Northumberland, PA
- Average rainfall in January:
0.87" - Average rainfall in February:
0.83" - Average rainfall in March:
0.98" - Average rainfall in April:
1.38" - Average rainfall in May:
1.42" - Average rainfall in June:
1.34"
- Average rainfall in July:
1.65" - Average rainfall in August:
1.14" - Average rainfall in September:
0.75" - Average rainfall in October:
1.06" - Average rainfall in November:
0.87" - Average rainfall in December:
0.87"
The wettest month (with the highest rainfall) is July (1.65").
The driest month (with the least rainfall) is September (0.75").
Average rainfall days
Northumberland, PA
- Average rainfall days in January:
7.7 days - Average rainfall days in February:
8.3 days - Average rainfall days in March:
11.1 days - Average rainfall days in April:
14.6 days - Average rainfall days in May:
14.7 days - Average rainfall days in June:
12.8 days
- Average rainfall days in July:
13.8 days - Average rainfall days in August:
12.3 days - Average rainfall days in September:
9.2 days - Average rainfall days in October:
10.9 days - Average rainfall days in November:
8.6 days - Average rainfall days in December:
9.4 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is January (7.7 days).
Average snowfall
Northumberland, PA
- Average snowfall in January:
1.38" - Average snowfall in February:
1.46" - Average snowfall in March:
0.75" - Average snowfall in April:
0.08" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is February (1.46").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days
Northumberland, PA
- Average snowfall days in January:
9.3 days - Average snowfall days in February:
9.2 days - Average snowfall days in March:
4.3 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:
0.1 days - Average snowfall days in November:
2.1 days - Average snowfall days in December:
6.1 days
The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Northumberland, PA
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - 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 18min
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 18min).
- Average sunshine in January:
4h and 12min - Average sunshine in February:
4h and 12min - Average sunshine in March:
6h and 18min - Average sunshine in April:
8h and 6min - Average sunshine in May:
8h and 24min - Average sunshine in June:
9h and 54min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
10h and 6min - Average sunshine in September:
8h and 48min - Average sunshine in October:
5h and 18min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 12min).
Average sunshine days
Northumberland, PA
- Average sunshine days in January:
16.9 days - Average sunshine days in February:
14.3 days - Average sunshine days in March:
15.6 days - Average sunshine days in April:
13.4 days - Average sunshine days in May:
13.7 days - Average sunshine days in June:
14.5 days
- Average sunshine days in July:
14.6 days - Average sunshine days in August:
15.8 days - Average sunshine days in September:
18.6 days - Average sunshine days in October:
17.5 days - Average sunshine days in November:
19.4 days - Average sunshine days in December:
17.8 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is April (13.4 days).
Average UV index
Northumberland, PA
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Northumberland, PA
The months with the most cloud cover are February and December (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility
Northumberland, PA
The months with the highest visibility are March, April, November and December (6mi).
The months with the lowest visibility are January, February, May, June, July, August, September and October (5mi).
