Climate and monthly weather forecastClay Hill, PA
Climate and monthly weather forecast
Weather in January
January, the same as December, is an icy winter month in Clay Hill, Pennsylvania, with an average temperature ranging between min 22.5°F (-5.3°C) and max 35.4°F (1.9°C). January stands out as Clay Hill's coldest month, with temperatures ranging between an average high of 35.4°F (1.9°C) and a low of 22.5°F (-5.3°C). Weather in January »Weather in February
February, the last month of the winter in Clay Hill, is also an icy month, with temperature in the range of an average low of 24.6°F (-4.1°C) and an average high of 39.9°F (4.4°C). Clay Hill's February average high-temperature settles at a still wintry 39.9°F (4.4°C), showing a near match with the preceding month. Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Clay Hill, Pennsylvania, with an average temperature fluctuating between 32°F (0°C) and 48.7°F (9.3°C). A soft shift in the average high-temperature is noticeable in March, transitioning from a cold 39.9°F (4.4°C) in February to a chilly 48.7°F (9.3°C). Weather in March »Weather in April
April is a refreshing spring month in Clay Hill, Pennsylvania, with temperature in the range of an average high of 61.3°F (16.3°C) and an average low of 41.7°F (5.4°C). The beginning of April signals a rise in the average high-temperature, moving from a chilly 48.7°F (9.3°C) in March to a comfortable 61.3°F (16.3°C). Weather in April »Weather in May
The last month of the spring, May, is an agreeable month in Clay Hill, Pennsylvania, with an average temperature fluctuating between 71.2°F (21.8°C) and 51.6°F (10.9°C). The arrival of May brings a temperature shift, with the average high-temperature escalating from a refreshing 61.3°F (16.3°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 Clay Hill, is a moderately hot month, with an average temperature ranging between max 79.5°F (26.4°C) and min 58.6°F (14.8°C). In Clay Hill, the average high-temperature in June slightly increases from an agreeable 71.2°F (21.8°C) in May to a warm 79.5°F (26.4°C). Weather in June »Weather in July
July, like June, in Clay Hill, Pennsylvania, is a moderately hot summer month, with an average temperature fluctuating between 84.4°F (29.1°C) and 62.6°F (17°C). July stands out as Clay Hill's warmest month, with an average high-temperature of 84.4°F (29.1°C) and a low-temperature of 62.6°F (17°C). The average heat index in July is estimated at a tropical 93.2°F (34°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Clay Hill, Pennsylvania, with an average temperature fluctuating between 61.5°F (16.4°C) and 81.9°F (27.7°C). August's arrival registers an average high-temperature of a still warm 81.9°F (27.7°C), closely aligning with the temperature of the previous month. Weather in August »Weather in September
September, the first month of the autumn in Clay Hill, is still a warm month, with an average temperature varying between 55.6°F (13.1°C) and 74.8°F (23.8°C). The beginning of September brings a minor change in the average high-temperature, shifting from 81.9°F (27.7°C) in August to a still warm 74.8°F (23.8°C). Weather in September »Weather in October
October, like September, in Clay Hill, Pennsylvania, is another comfortable autumn month, with an average temperature ranging between max 63.3°F (17.4°C) and min 46°F (7.8°C). Clay Hill's October weather features a mild decline in high-temperatures, reducing from a warm 74.8°F (23.8°C) in September to a refreshing 63.3°F (17.4°C). Weather in October »Weather in November
November, the last month of the autumn in Clay Hill, is also a fresh month, with temperature in the range of an average high of 50.5°F (10.3°C) and an average low of 34.7°F (1.5°C). The arrival of November corresponds with a shift in temperature, down from a refreshing 63.3°F (17.4°C) in October to a cool 50.5°F (10.3°C). Weather in November »Weather in December
December, the first month of the winter in Clay Hill, is also a wintry month, with temperature in the range of an average low of 28.9°F (-1.7°C) and an average high of 41.2°F (5.1°C). With the onset of December, Clay Hill experiences a modest temperature adjustment, with the average high-temperature receding from a fresh 50.5°F (10.3°C) in November to an icy 41.2°F (5.1°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Clay Hill, PA
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (35.4°F).
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure
Clay Hill, PA
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.07"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:
29.95"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed
Clay Hill, PA
- Average wind speed in January:
7.7mph - Average wind speed in February:
7.6mph - Average wind speed in March:
7.5mph - Average wind speed in April:
7.5mph - Average wind speed in May:
5.8mph - Average wind speed in June:
5.5mph
- Average wind speed in July:
4.5mph - Average wind speed in August:
4.5mph - Average wind speed in September:
5mph - Average wind speed in October:
6.2mph - Average wind speed in November:
6.6mph - Average wind speed in December:
7mph
The windiest month (with the highest average wind speed) is January (7.7mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity
Clay Hill, PA
The months with the highest relative humidity are February, May, October and December (79%).
The months with the lowest relative humidity are April and July (75%).
Average rainfall
Clay Hill, PA
- Average rainfall in January:
1.85" - Average rainfall in February:
1.93" - Average rainfall in March:
2.17" - Average rainfall in April:
2.68" - Average rainfall in May:
3.15" - Average rainfall in June:
2.56"
- Average rainfall in July:
2.83" - Average rainfall in August:
2.76" - Average rainfall in September:
1.97" - Average rainfall in October:
2.28" - Average rainfall in November:
1.89" - Average rainfall in December:
2.01"
The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is January (1.85").
Average rainfall days
Clay Hill, PA
- Average rainfall days in January:
9.2 days - Average rainfall days in February:
9.3 days - Average rainfall days in March:
12.6 days - Average rainfall days in April:
16.5 days - Average rainfall days in May:
18.8 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
16.9 days - Average rainfall days in August:
16.8 days - Average rainfall days in September:
14.1 days - Average rainfall days in October:
12.5 days - Average rainfall days in November:
9 days - Average rainfall days in December:
10.3 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is November (9 days).
Average snowfall
Clay Hill, PA
The month with the highest snowfall is January (4.53").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Clay Hill, PA
- Average snowfall days in January:
8.1 days - Average snowfall days in February:
7.1 days - Average snowfall days in March:
5.3 days - Average snowfall days in April:
0.6 days - Average snowfall days in May:
0 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:
4.7 days
The month with the highest number of snowfall days is January (8.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Clay Hill, 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:
14h and 54min
- 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: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
4h and 42min - Average sunshine in February:
4h and 36min - Average sunshine in March:
6h and 24min - Average sunshine in April:
8h and 30min - Average sunshine in May:
8h and 36min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 12min - Average sunshine in September:
8h and 36min - Average sunshine in October:
5h and 30min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days
Clay Hill, PA
- Average sunshine days in January:
16.4 days - Average sunshine days in February:
14.1 days - Average sunshine days in March:
13.9 days - Average sunshine days in April:
11.5 days - Average sunshine days in May:
10.4 days - Average sunshine days in June:
12.3 days
- Average sunshine days in July:
12.2 days - Average sunshine days in August:
12.6 days - Average sunshine days in September:
14.4 days - Average sunshine days in October:
16.8 days - Average sunshine days in November:
18.5 days - Average sunshine days in December:
17.1 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10.4 days).
Average UV index
Clay Hill, 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, November and December (UV index 2).
Average cloud cover
Clay Hill, PA
The months with the most cloud cover are January, February and December (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility
Clay Hill, PA
The months with the highest visibility are April, June, July, August and November (6mi).
The months with the lowest visibility are January, February, March, May, September, October and December (5mi).





