Climate and monthly weather forecastRockhill, PA
Climate and monthly weather forecast
Weather in January
January, like December, in Rockhill, Pennsylvania, is another cold winter month, with an average temperature ranging between max 32.9°F (0.5°C) and min 20.1°F (-6.6°C). January, noted for its average high-temperature of 32.9°F (0.5°C) and an average low-temperature of 20.1°F (-6.6°C), is considered the coldest month. Weather in January »Weather in February
The last month of the winter, February, is another cold month in Rockhill, Pennsylvania, with an average temperature fluctuating between 37.2°F (2.9°C) and 22.8°F (-5.1°C). Rockhill ushers in February with an average high-temperature of a still icy 37.2°F (2.9°C), showing a close resemblance to the previous month. Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Rockhill, Pennsylvania, with temperature in the range of an average low of 29.8°F (-1.2°C) and an average high of 46.9°F (8.3°C). The shift from February to March brings an increase in the average high-temperature, moving from a cold 37.2°F (2.9°C) to a chilly 46.9°F (8.3°C). Weather in March »Weather in April
April in Rockhill, Pennsylvania, is a moderate spring month, with an average temperature fluctuating between 59.4°F (15.2°C) and 39.7°F (4.3°C). An upsurge in temperatures occurs as March gives way to April, with average highs shifting from a chilly 46.9°F (8.3°C) to a moderate 59.4°F (15.2°C). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Rockhill, Pennsylvania, with temperature in the range of an average low of 49.5°F (9.7°C) and an average high of 70.3°F (21.3°C). As May arrives, a rise in the average high-temperature is observed, moving from a mild 59.4°F (15.2°C) in April to a pleasant 70.3°F (21.3°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Rockhill, Pennsylvania, with temperature in the range of an average low of 55.9°F (13.3°C) and an average high of 78.3°F (25.7°C). Rockhill's June weather indicates a minor ascent in high-temperatures, adjusting from an agreeable 70.3°F (21.3°C) in May to a moderately hot 78.3°F (25.7°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Rockhill, Pennsylvania, with temperature in the range of an average high of 83.7°F (28.7°C) and an average low of 60.4°F (15.8°C). In Rockhill, the month of July is known for its highest average temperatures, reaching a high of 83.7°F (28.7°C) and a low of 60.4°F (15.8°C). The heat index value during July is evaluated 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 Rockhill, Pennsylvania, with temperature in the range of an average high of 81.3°F (27.4°C) and an average low of 58.5°F (14.7°C). As Rockhill welcomes August, the average high-temperature is noted at a still moderately hot 81.3°F (27.4°C), closely aligning with the preceding month. Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Rockhill, Pennsylvania, with an average temperature fluctuating between 53.2°F (11.8°C) and 74.3°F (23.5°C). The transition into September is accompanied by a slight temperature decrease, with the average high-temperature shifting from a warm 81.3°F (27.4°C) in August to a still moderately hot 74.3°F (23.5°C). Weather in September »Weather in October
October, the same as September, is another refreshing autumn month in Rockhill, Pennsylvania, with an average temperature ranging between max 61.5°F (16.4°C) and min 43.9°F (6.6°C). In Rockhill, the average high-temperature in October decreases from a warm 74.3°F (23.5°C) in September to a comfortable 61.5°F (16.4°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Rockhill, Pennsylvania, with an average temperature ranging between max 48.4°F (9.1°C) and min 32.9°F (0.5°C). The average high-temperature drops in November, from October's refreshing 61.5°F (16.4°C) to a frosty 48.4°F (9.1°C). Weather in November »Weather in December
The first month of the winter, December, is still a cold month in Rockhill, Pennsylvania, with temperature in the range of an average low of 27.5°F (-2.5°C) and an average high of 38.8°F (3.8°C). December ushers in a slight temperature change, with average high-temperatures reducing from November's frosty 48.4°F (9.1°C) to a wintry 38.8°F (3.8°C). Weather in December »Updated: Jul 27, 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 is the coldest month, with an average high-temperature of 32.9°F (0.5°C) and an average low-temperature of 20.1°F (-6.6°C).
Throughout the year, there are 164.3 rainfall days, and 28.19" (716mm) of precipitation is accumulated.
January through April, October through December are months with snowfall in Rockhill.
January is the month with the most snowfall. Snow falls for 12.2 days and accumulates 5.24" (133mm) of snow.
Throughout the year, in Rockhill, there are 40.6 snowfall days, and 17.91" (455mm) of snow is accumulated.
With an average of 4.2h of sunshine, January has the least sunshine of the year.
January through March, October through 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%.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Rockhill, 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.
May is the month with the most rainfall. Rain falls for 17.7 days and accumulates 3.07" (78mm) of precipitation.
May through September are months without snowfall in Rockhill.
The months with the highest UV index are May and June, with an average maximum UV index of 6.
With an average of 15h and 0min of daylight, June has the longest days of the year.
The warmest period tends to be July, when average temperatures fluctuate between a high of 83.7°F (28.7°C) and a low of 60.4°F (15.8°C).
The least humid month is July, with an average relative humidity of 75%.
The month with the most sunshine is July, with an average of 10.3h of sunshine.
The month with the least rainfall is September, when the rain falls for 12.8 days and typically collects 1.85" (47mm) of precipitation.
December has the shortest days of the year in Rockhill, with an average of 9h and 24min of daylight.
Average temperature
Rockhill, PA
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (32.9°F).
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure
Rockhill, PA
- Average pressure in January:
30.1"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
Rockhill, PA
- Average wind speed in January:
7.8mph - Average wind speed in February:
7.6mph - Average wind speed in March:
7.3mph - Average wind speed in April:
7.4mph - Average wind speed in May:
5.8mph - Average wind speed in June:
5.5mph
- Average wind speed in July:
4.6mph - Average wind speed in August:
4.3mph - Average wind speed in September:
4.8mph - Average wind speed in October:
6.1mph - Average wind speed in November:
6.5mph - Average wind speed in December:
7.1mph
The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity
Rockhill, PA
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is July (75%).
Average rainfall
Rockhill, PA
- Average rainfall in January:
2.09" - Average rainfall in February:
2.17" - Average rainfall in March:
2.32" - Average rainfall in April:
2.87" - Average rainfall in May:
3.07" - Average rainfall in June:
2.32"
- Average rainfall in July:
2.48" - Average rainfall in August:
2.05" - Average rainfall in September:
1.85" - Average rainfall in October:
2.64" - Average rainfall in November:
1.97" - Average rainfall in December:
2.36"
The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days
Rockhill, PA
- Average rainfall days in January:
9.8 days - Average rainfall days in February:
9.5 days - Average rainfall days in March:
13.6 days - Average rainfall days in April:
16.5 days - Average rainfall days in May:
17.7 days - Average rainfall days in June:
16.6 days
- Average rainfall days in July:
17.6 days - Average rainfall days in August:
15.6 days - Average rainfall days in September:
12.8 days - Average rainfall days in October:
13.4 days - Average rainfall days in November:
10.3 days - Average rainfall days in December:
10.9 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (9.5 days).
Average snowfall
Rockhill, PA
The month with the highest snowfall is January (5.24").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Rockhill, PA
- Average snowfall days in January:
12.2 days - Average snowfall days in February:
10.8 days - Average snowfall days in March:
6.3 days - Average snowfall days in April:
1.3 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:
0.2 days - Average snowfall days in November:
2.1 days - Average snowfall days in December:
7.7 days
The month with the highest number of snowfall days is January (12.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Rockhill, 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 12min - Average sunshine in February:
4h and 18min - Average sunshine in March:
6h and 12min - Average sunshine in April:
8h and 6min - Average sunshine in May:
8h and 30min - Average sunshine in June:
9h and 42min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
10h and 12min - Average sunshine in September:
8h and 36min - Average sunshine in October:
5h and 24min - Average sunshine in November:
5h and 24min - Average sunshine in December:
4h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days
Rockhill, PA
- Average sunshine days in January:
12.8 days - Average sunshine days in February:
11.2 days - Average sunshine days in March:
12.4 days - Average sunshine days in April:
11.5 days - Average sunshine days in May:
10.7 days - Average sunshine days in June:
11.5 days
- Average sunshine days in July:
11.5 days - Average sunshine days in August:
12.8 days - Average sunshine days in September:
14.5 days - Average sunshine days in October:
15 days - Average sunshine days in November:
16.7 days - Average sunshine days in December:
14.2 days
The month with the most sunshine days is November (16.7 days).
The month with the least sunshine days is May (10.7 days).
Average UV index
Rockhill, PA
The months with the highest UV index are May and June (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover
Rockhill, PA
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility
Rockhill, PA
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
