Climate and monthly weather forecastHorsham, PA
Climate and monthly weather forecast
Weather in January
January, like December, in Horsham, Pennsylvania, is another cold winter month, with an average temperature fluctuating between 24.3°F (-4.3°C) and 36.9°F (2.7°C). In Horsham, Pennsylvania, the month of January registers the lowest temperatures, averaging 36.9°F (2.7°C) at the peak and 24.3°F (-4.3°C) at the lowest. Weather in January »Weather in February
The last month of the winter, February, is another cold month in Horsham, Pennsylvania, with an average temperature varying between 26.4°F (-3.1°C) and 40.1°F (4.5°C). February is marked by an average high-temperature of a still wintry 40.1°F (4.5°C), almost identical to the preceding month. Weather in February »Weather in March
The first month of the spring, March, is a frosty month in Horsham, Pennsylvania, with temperature in the range of an average high of 48.4°F (9.1°C) and an average low of 33.4°F (0.8°C). Horsham's weather in March shows a minor rise in the average high-temperature, moving slightly up from February's icy 40.1°F (4.5°C) to a frosty 48.4°F (9.1°C). Weather in March »Weather in April
April is a moderate spring month in Horsham, Pennsylvania, with an average temperature ranging between max 60.6°F (15.9°C) and min 43.9°F (6.6°C). The arrival of April brings a change in Horsham's weather, with average high-temperatures moving from March's frosty 48.4°F (9.1°C) to a mild 60.6°F (15.9°C). Weather in April »Weather in May
May, the last month of the spring in Horsham, is an agreeable month, with temperature in the range of an average low of 53.6°F (12°C) and an average high of 71.2°F (21.8°C). With the beginning of May, Horsham's average high-temperature sees an increase, transitioning from a moderate 60.6°F (15.9°C) in April to an agreeable 71.2°F (21.8°C). Weather in May »Weather in June
June, the first month of the summer in Horsham, is a moderately hot month, with an average temperature varying between 79.9°F (26.6°C) and 61.5°F (16.4°C). June's arrival is noted with a slight increase in the average high-temperature, moving from a pleasant 71.2°F (21.8°C) in May to a warm 79.9°F (26.6°C). Weather in June »Weather in July
July, like June, in Horsham, Pennsylvania, is another warm summer month, with an average temperature ranging between min 67.5°F (19.7°C) and max 85.6°F (29.8°C). July, noted for its average high-temperature of 85.6°F (29.8°C) and an average low-temperature of 67.5°F (19.7°C), is considered the warmest month. The heat index for July is computed to be a fiery hot 95°F (35°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Horsham, Pennsylvania, with an average temperature varying between 66.2°F (19°C) and 83.3°F (28.5°C). With the onset of August, Horsham's average high-temperature clocks in at a still warm 83.3°F (28.5°C), showing a minor fluctuation from the previous month. Weather in August »Weather in September
September, the first month of the autumn in Horsham, is still a warm month, with an average temperature varying between 76.1°F (24.5°C) and 59.2°F (15.1°C). The onset of September entails a subtle temperature shift, as the average high-temperature eases from a moderately hot 83.3°F (28.5°C) in August to a still warm 76.1°F (24.5°C). Weather in September »Weather in October
October, the same as September, is another refreshing autumn month in Horsham, Pennsylvania, with an average temperature varying between 48.9°F (9.4°C) and 63.9°F (17.7°C). October is characterized by a reduction in the average high-temperature, from a moderately hot 76.1°F (24.5°C) in September to a comfortable 63.9°F (17.7°C). Weather in October »Weather in November
The last month of the autumn, November, is another cool month in Horsham, Pennsylvania, with an average temperature varying between 51.8°F (11°C) and 37.9°F (3.3°C). November's arrival coincides with a drop in the average high-temperature, decreasing from October's enjoyable 63.9°F (17.7°C) to a cool 51.8°F (11°C). Weather in November »Weather in December
December, the first month of the winter in Horsham, is also a frosty month, with an average temperature ranging between min 31.1°F (-0.5°C) and max 42.8°F (6°C). December weather is marked by a drop in the average high-temperature, falling from a cool 51.8°F (11°C) in November to a frosty 42.8°F (6°C). Weather in December »Updated: Aug 22, 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, on average, is the coldest month, registering a high temperature of 36.9°F (2.7°C) and a low of 24.3°F (-4.3°C).
Throughout the year, there are 83.7 rainfall days, and 6.22" (158mm) of precipitation is accumulated.
Months with snowfall are January through May, November and December.
In Horsham, during the entire year, snow falls for 12.6 days and aggregates up to 1.73" (44mm) of snow.
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.
February, October and December, with an average relative humidity of 78%, are most humid months.
February is the month with the most snowfall. Snow falls for 3.7 days and accumulates 0.43" (11mm) of snow.
The month with the least sunshine is February, with an average of 4.8h of sunshine.
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, July and August, with an average relative humidity of 72%.
May through August, with an average maximum UV index of 6, are months with the highest UV index.
June through October are months without snowfall.
June has the longest days of the year, with an average of 15h and 0min of daylight.
July is the warmest month, with an average high-temperature of 85.6°F (29.8°C) and an average low-temperature of 67.5°F (19.7°C).
With an average of 10.7h of sunshine, July has the most sunshine of the year in Horsham.
The month with the least rainfall is September, when the rain falls for 6.7 days and typically collects 0.2" (5mm) of precipitation.
December is the month with the most rainfall. Rain falls for 5.8 days and accumulates 0.75" (19mm) of precipitation.
December has the shortest days of the year, with an average of 9h and 24min of daylight.
Average temperature
Horsham, PA
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (36.9°F).
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure
Horsham, 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:
29.99"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
Horsham, PA
- Average wind speed in January:
8mph - Average wind speed in February:
8mph - Average wind speed in March:
8.4mph - Average wind speed in April:
8.2mph - Average wind speed in May:
6.6mph - Average wind speed in June:
6.2mph
- Average wind speed in July:
5.4mph - Average wind speed in August:
5.3mph - Average wind speed in September:
5.8mph - Average wind speed in October:
6.8mph - Average wind speed in November:
7.2mph - Average wind speed in December:
7.5mph
The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity
Horsham, PA
The months with the highest relative humidity are February, October and December (78%).
The months with the lowest relative humidity are April, July and August (72%).
Average rainfall
Horsham, PA
- Average rainfall in January:
0.35" - Average rainfall in February:
0.39" - Average rainfall in March:
0.55" - Average rainfall in April:
0.51" - Average rainfall in May:
0.59" - Average rainfall in June:
0.55"
- Average rainfall in July:
0.71" - Average rainfall in August:
0.59" - Average rainfall in September:
0.2" - Average rainfall in October:
0.47" - Average rainfall in November:
0.55" - Average rainfall in December:
0.75"
The wettest month (with the highest rainfall) is December (0.75").
The driest month (with the least rainfall) is September (0.2").
Average rainfall days
Horsham, PA
- Average rainfall days in January:
4.3 days - Average rainfall days in February:
4.5 days - Average rainfall days in March:
7.3 days - Average rainfall days in April:
7.9 days - Average rainfall days in May:
8.1 days - Average rainfall days in June:
9.2 days
- Average rainfall days in July:
10.3 days - Average rainfall days in August:
8.5 days - Average rainfall days in September:
6.7 days - Average rainfall days in October:
6.6 days - Average rainfall days in November:
4.5 days - Average rainfall days in December:
5.8 days
The month with the highest number of rainy days is July (10.3 days).
The month with the least rainy days is January (4.3 days).
Average snowfall
Horsham, PA
- Average snowfall in January:
0.28" - Average snowfall in February:
0.43" - Average snowfall in March:
0.39" - Average snowfall in April:
0.04" - Average snowfall in May:
0.16" - Average snowfall in June:
0"
The month with the highest snowfall is February (0.43").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days
Horsham, PA
- Average snowfall days in January:
3.1 days - Average snowfall days in February:
3.7 days - Average snowfall days in March:
3 days - Average snowfall days in April:
0.3 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:
0.6 days - Average snowfall days in December:
1.7 days
The month with the highest number of snowfall days is February (3.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Horsham, 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 24min - 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 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
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 24min).
- Average sunshine in January:
4h and 54min - Average sunshine in February:
4h and 48min - Average sunshine in March:
6h and 36min - Average sunshine in April:
8h and 24min - Average sunshine in May:
8h and 42min - Average sunshine in June:
9h and 54min
- Average sunshine in July:
10h and 42min - Average sunshine in August:
10h and 12min - Average sunshine in September:
8h and 54min - Average sunshine in October:
5h and 42min - Average sunshine in November:
5h and 36min - Average sunshine in December:
5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days
Horsham, PA
- Average sunshine days in January:
24.3 days - Average sunshine days in February:
20.3 days - Average sunshine days in March:
20.8 days - Average sunshine days in April:
21.5 days - Average sunshine days in May:
19.6 days - Average sunshine days in June:
18.1 days
- Average sunshine days in July:
17.4 days - Average sunshine days in August:
20.3 days - Average sunshine days in September:
21.2 days - Average sunshine days in October:
22.1 days - Average sunshine days in November:
23.9 days - Average sunshine days in December:
23.2 days
The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is July (17.4 days).
Average UV index
Horsham, PA
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Horsham, PA
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility
Horsham, PA
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
