Climate and monthly weather forecastHellertown, PA
Climate and monthly weather forecast
Weather in January
January, like December, in Hellertown, Pennsylvania, is a wintry winter month, with an average temperature varying between 21.6°F (-5.8°C) and 34°F (1.1°C). Hellertown's January weather, with an average high temperature of 34°F (1.1°C) and an average low temperature of 21.6°F (-5.8°C), tends to be the coldest of the year. Weather in January »Weather in February
February, the last month of the winter in Hellertown, is also an icy month, with temperature in the range of an average low of 23.4°F (-4.8°C) and an average high of 37.8°F (3.2°C). The average high-temperature is a still cold 37.8°F (3.2°C) in February, hardly different from the 34°F (1.1°C) recorded in January. Weather in February »Weather in March
March, the first month of the spring in Hellertown, is a chilly month, with an average temperature fluctuating between 46°F (7.8°C) and 30°F (-1.1°C). March introduces a marginal temperature uplift, with average high-temperatures adjusting from February's wintry 37.8°F (3.2°C) to a frosty 46°F (7.8°C). Weather in March »Weather in April
April is a refreshing spring month in Hellertown, Pennsylvania, with temperature in the range of an average low of 40.6°F (4.8°C) and an average high of 58.6°F (14.8°C). The beginning of April marks a shift in the average high-temperature, moving from March's frosty 46°F (7.8°C) to a moderate 58.6°F (14.8°C). Weather in April »Weather in May
May, the last month of the spring in Hellertown, is a pleasant month, with an average temperature varying between 69.6°F (20.9°C) and 50.5°F (10.3°C). The transition from April to May brings a temperature rise, with average high-temperatures increasing from a mild 58.6°F (14.8°C) to an agreeable 69.6°F (20.9°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Hellertown, Pennsylvania, with temperature in the range of an average low of 57.9°F (14.4°C) and an average high of 77.4°F (25.2°C). Hellertown observes a slight uplift in the average high-temperature with the onset of June, adjusting from May's agreeable 69.6°F (20.9°C) to a moderately hot 77.4°F (25.2°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Hellertown, Pennsylvania, with an average temperature varying between 63.5°F (17.5°C) and 83.5°F (28.6°C). July, characterized by an average high temperature of 83.5°F (28.6°C) and a low temperature of 63.5°F (17.5°C), is generally the warmest month. July's mean heat index is appraised at a hot 91.4°F (33°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Hellertown, Pennsylvania, with temperature in the range of an average high of 81°F (27.2°C) and an average low of 61.5°F (16.4°C). August registers an average high-temperature of a still warm 81°F (27.2°C), slightly varied from July's 83.5°F (28.6°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Hellertown, Pennsylvania, with an average temperature fluctuating between 74.3°F (23.5°C) and 55°F (12.8°C). September's onset corresponds with a subtle shift in the average high-temperature, slightly moving from 81°F (27.2°C) in August to a still warm 74.3°F (23.5°C). Weather in September »Weather in October
October, like September, in Hellertown, Pennsylvania, is another refreshing autumn month, with an average temperature varying between 46.2°F (7.9°C) and 62.1°F (16.7°C). The average high-temperature drops in October, from September's moderately hot 74.3°F (23.5°C) to a refreshing 62.1°F (16.7°C). Weather in October »Weather in November
The last month of the autumn, November, is another cool month in Hellertown, Pennsylvania, with an average temperature fluctuating between 50°F (10°C) and 35.4°F (1.9°C). November brings a drop in Hellertown's average high-temperature, falling from a comfortable 62.1°F (16.7°C) in October to a cool 50°F (10°C). Weather in November »Weather in December
December, the first month of the winter in Hellertown, is also an icy month, with an average temperature ranging between max 40.1°F (4.5°C) and min 28.8°F (-1.8°C). The beginning of December marks a decrease in the average high-temperature, transitioning from a cool 50°F (10°C) in November to a wintry 40.1°F (4.5°C). Weather in December »Updated: Jul 4, 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
With average high and low temperatures of 34°F (1.1°C) and 21.6°F (-5.8°C) respectively, January is Hellertown's coldest month.
Throughout the year, there are 153 rainfall days, and 26.81" (681mm) of precipitation is accumulated.
Months with snowfall are January through May, October through December.
Throughout the year, there are 26.7 snowfall days, and 14.49" (368mm) 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 is February, with an average relative humidity of 82%.
February has the least sunshine of the year, with an average of 4.5h of sunshine.
March is the month with the most snowfall. Snow falls for 5 days and accumulates 4.13" (105mm) of snow.
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.
The months with the lowest humidity are April and July, with an average relative humidity of 76%.
The months with the highest UV index are May through July, with an average maximum UV index of 6.
June through September are months without snowfall.
With an average of 15h and 0min of daylight, June has the longest days of the year.
Hellertown's temperature records reveal July as the warmest month, marked by average highs of 83.5°F (28.6°C) and lows of 63.5°F (17.5°C).
The month with the most rainfall is July, when the rain falls for 16.2 days and typically aggregates up to 2.91" (74mm) of precipitation.
With an average of 10.4h of sunshine, July has the most sunshine of the year.
September is the month with the least rainfall. Rain falls for 11.8 days and accumulates 1.57" (40mm) of precipitation.
December has the shortest days of the year, with an average of 9h and 18min of daylight.
Average temperature
Hellertown, PA
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (34°F).
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure
Hellertown, PA
- Average pressure in January:
30.08"Hg - Average pressure in February:
30.05"Hg - Average pressure in March:
30.07"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:
29.96"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Hellertown, PA
- Average wind speed in January:
8mph - Average wind speed in February:
7.9mph - Average wind speed in March:
8.1mph - Average wind speed in April:
7.9mph - Average wind speed in May:
6.2mph - Average wind speed in June:
5.8mph
- Average wind speed in July:
5.1mph - Average wind speed in August:
5mph - Average wind speed in September:
5.5mph - Average wind speed in October:
6.7mph - Average wind speed in November:
7mph - Average wind speed in December:
7.6mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity
Hellertown, PA
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April and July (76%).
Average rainfall
Hellertown, PA
- Average rainfall in January:
1.81" - Average rainfall in February:
1.69" - Average rainfall in March:
2.17" - Average rainfall in April:
2.44" - Average rainfall in May:
2.72" - Average rainfall in June:
2.4"
- Average rainfall in July:
2.91" - Average rainfall in August:
2.76" - Average rainfall in September:
1.57" - Average rainfall in October:
2.17" - Average rainfall in November:
1.93" - Average rainfall in December:
2.24"
The wettest month (with the highest rainfall) is July (2.91").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days
Hellertown, PA
- Average rainfall days in January:
7.8 days - Average rainfall days in February:
8.4 days - Average rainfall days in March:
11.8 days - Average rainfall days in April:
15.5 days - Average rainfall days in May:
17.8 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
16.2 days - Average rainfall days in August:
15.3 days - Average rainfall days in September:
11.8 days - Average rainfall days in October:
12.4 days - Average rainfall days in November:
9.5 days - Average rainfall days in December:
10.7 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (7.8 days).
Average snowfall
Hellertown, PA
- Average snowfall in January:
3.23" - Average snowfall in February:
3.7" - Average snowfall in March:
4.13" - Average snowfall in April:
0.16" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
The month with the highest snowfall is March (4.13").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Hellertown, PA
- Average snowfall days in January:
7.8 days - Average snowfall days in February:
7.8 days - Average snowfall days in March:
5 days - Average snowfall days in April:
0.4 days - Average snowfall days in May:
0.1 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:
0.7 days - Average snowfall days in December:
4.8 days
The months with the highest number of snowfall days are January and February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Hellertown, PA
- Average daylight in January:
9h and 42min - 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 0min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - 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 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
4h and 42min - Average sunshine in February:
4h and 30min - Average sunshine in March:
6h and 18min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 18min - Average sunshine in June:
9h and 36min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
9h and 54min - Average sunshine in September:
8h and 48min - Average sunshine in October:
5h and 30min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days
Hellertown, PA
- Average sunshine days in January:
18 days - Average sunshine days in February:
13.9 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
12.8 days - Average sunshine days in May:
11 days - Average sunshine days in June:
12.3 days
- Average sunshine days in July:
11.8 days - Average sunshine days in August:
13.4 days - Average sunshine days in September:
15.6 days - Average sunshine days in October:
16.8 days - Average sunshine days in November:
18.9 days - Average sunshine days in December:
17.2 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (11 days).
Average UV index
Hellertown, PA
The months with the highest UV index are May, 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
Hellertown, PA
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility
Hellertown, PA
The months with the highest visibility are April, June and November (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September, October and December (5mi).
