Climate and monthly weather forecastRadnor, OH
Climate and monthly weather forecast
Weather in January
January, like December, in Radnor, Ohio, is another cold winter month, with an average temperature varying between 20.3°F (-6.5°C) and 32°F (0°C). January, having an average high-temperature of 32°F (0°C) and an average low-temperature of 20.3°F (-6.5°C), is the coldest month. Weather in January »Weather in February
February, the last month of the winter in Radnor, is also an icy month, with temperature in the range of an average high of 36.9°F (2.7°C) and an average low of 23.7°F (-4.6°C). Radnor greets February with an average high-temperature of a still cold 36.9°F (2.7°C), marking a slight deviation from the preceding month. Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Radnor, Ohio, with temperature in the range of an average high of 47.7°F (8.7°C) and an average low of 32.5°F (0.3°C). With the onset of March, Radnor's average high-temperature experiences a rise, moving from February's wintry 36.9°F (2.7°C) to a frosty 47.7°F (8.7°C). Weather in March »Weather in April
April in Radnor, Ohio, is a mild spring month, with an average temperature varying between 42.8°F (6°C) and 59.9°F (15.5°C). April's arrival sees a rise in the average high-temperature, jumping from March's chilly 47.7°F (8.7°C) to a mild 59.9°F (15.5°C). Weather in April »Weather in May
May, the last month of the spring in Radnor, is a pleasant month, with an average temperature fluctuating between 53.6°F (12°C) and 71.1°F (21.7°C). May's onset is marked by a temperature increase, moving from a mild 59.9°F (15.5°C) in April to a pleasant 71.1°F (21.7°C). Weather in May »Weather in June
June, the first month of the summer in Radnor, is a moderately hot month, with an average temperature fluctuating between 60.4°F (15.8°C) and 77.9°F (25.5°C). In Radnor, stepping into June brings a gentle temperature nudge, moving slightly up from May's pleasant 71.1°F (21.7°C) to a warm 77.9°F (25.5°C). Weather in June »Weather in July
July, like June, in Radnor, Ohio, is another warm summer month, with temperature in the range of an average low of 63.9°F (17.7°C) and an average high of 81.1°F (27.3°C). Radnor's warmest month, July, generally records average temperatures ranging from a high of 81.1°F (27.3°C) to a low of 63.9°F (17.7°C). The average heat index in July is calculated to be a hot 86°F (30°C). Weather in July »Weather in August
August, the last month of the summer in Radnor, is another warm month, with an average temperature varying between 61.5°F (16.4°C) and 79.3°F (26.3°C). As August unfolds, the average high-temperature reaches a still warm 79.3°F (26.3°C), hinting at a slight fluctuation from the previous month. Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Radnor, Ohio, with an average temperature ranging between min 56.1°F (13.4°C) and max 74.7°F (23.7°C). With the transition into September, Radnor notes an average high-temperature of a still moderately hot 74.7°F (23.7°C), closely resembling August. Weather in September »Weather in October
October, like September, in Radnor, Ohio, is another enjoyable autumn month, with an average temperature varying between 61.9°F (16.6°C) and 46.2°F (7.9°C). In Radnor, entering October brings a temperature decrement, reducing from September's moderately hot 74.7°F (23.7°C) to an enjoyable 61.9°F (16.6°C). Weather in October »Weather in November
November, the last month of the autumn in Radnor, is another chilly month, with an average temperature varying between 35.1°F (1.7°C) and 48.6°F (9.2°C). The onset of November entails a temperature shift, as the average high-temperature decreases from a comfortable 61.9°F (16.6°C) in October to a frosty 48.6°F (9.2°C). Weather in November »Weather in December
December, the first month of the winter in Radnor, is also a wintry month, with an average temperature fluctuating between 38.3°F (3.5°C) and 28.6°F (-1.9°C). The onset of December coincides with a reduction in the average high-temperature, falling from a chilly 48.6°F (9.2°C) in November to a cold 38.3°F (3.5°C). Weather in December »Updated: Feb 13, 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
Radnor's temperature records reveal January as the coldest month, marked by average highs of 32°F (0°C) and lows of 20.3°F (-6.5°C).
The most humid month is January, with an average relative humidity of 84%.
In Radnor, Ohio, during the entire year, the rain falls for 172.1 days and collects up to 32.01" (813mm) of precipitation.
Months with snowfall in Radnor are January through April, October through December.
The month with the most snowfall is January, when snow falls for 13.8 days and typically aggregates up to 3.46" (88mm) of snow.
In Radnor, during the entire year, snow falls for 46.8 days and aggregates up to 13.58" (345mm) of snow.
With an average of 3.5h of sunshine, January has the least sunshine of the year in Radnor, Ohio.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Radnor, Ohio, 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 18.7 days and accumulates 3.82" (97mm) of precipitation.
In Radnor, Ohio, snow does not fall in May through September.
The month with the longest days in Radnor is June, with an average of 15h and 0min of daylight.
The months with the highest UV index in Radnor are June through August, with an average maximum UV index of 6.
July is the warmest month of the year in Radnor, registering average temperatures as high as 81.1°F (27.3°C) and as low as 63.9°F (17.7°C).
August has the most sunshine of the year, with an average of 10.4h of sunshine.
September is the month with the least rainfall. Rain falls for 14.7 days and accumulates 1.93" (49mm) of precipitation.
The months with the lowest humidity are October and November, with an average relative humidity of 75%.
With an average of 9h and 18min of daylight, December has the shortest days of the year.
Average temperature
Radnor, OH
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (32°F).
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure
Radnor, OH
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.04"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.12"Hg
The months with the highest atmospheric pressure are January and November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Radnor, OH
- Average wind speed in January:
10mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.4mph - Average wind speed in April:
9.6mph - Average wind speed in May:
7.7mph - Average wind speed in June:
7mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.3mph - Average wind speed in October:
8.1mph - Average wind speed in November:
8.9mph - Average wind speed in December:
9.2mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity
Radnor, OH
The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall
Radnor, OH
- Average rainfall in January:
2.36" - Average rainfall in February:
2.2" - Average rainfall in March:
2.8" - Average rainfall in April:
3.31" - Average rainfall in May:
3.82" - Average rainfall in June:
3.31"
The wettest month (with the highest rainfall) is May (3.82").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days
Radnor, OH
- Average rainfall days in January:
10.2 days - Average rainfall days in February:
10 days - Average rainfall days in March:
13.7 days - Average rainfall days in April:
17 days - Average rainfall days in May:
18.7 days - Average rainfall days in June:
17.8 days
- Average rainfall days in July:
18.2 days - Average rainfall days in August:
15.5 days - Average rainfall days in September:
14.7 days - Average rainfall days in October:
13.9 days - Average rainfall days in November:
10.5 days - Average rainfall days in December:
11.9 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is February (10 days).
Average snowfall
Radnor, OH
The month with the highest snowfall is January (3.46").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Radnor, OH
- Average snowfall days in January:
13.8 days - Average snowfall days in February:
11.2 days - Average snowfall days in March:
6.1 days - Average snowfall days in April:
1.2 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:
0.5 days - Average snowfall days in November:
3.6 days - Average snowfall days in December:
10.3 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Radnor, OH
- 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 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:
3h and 30min - Average sunshine in February:
4h and 24min - Average sunshine in March:
6h and 6min - Average sunshine in April:
7h and 24min - Average sunshine in May:
9h and 6min - Average sunshine in June:
9h and 54min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
10h and 24min - Average sunshine in September:
8h and 12min - Average sunshine in October:
6h and 12min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days
Radnor, OH
- Average sunshine days in January:
10.3 days - Average sunshine days in February:
9.1 days - Average sunshine days in March:
12.3 days - Average sunshine days in April:
10.9 days - Average sunshine days in May:
9.4 days - Average sunshine days in June:
10.2 days
- Average sunshine days in July:
9.8 days - Average sunshine days in August:
11.1 days - Average sunshine days in September:
13.7 days - Average sunshine days in October:
15.1 days - Average sunshine days in November:
16.1 days - Average sunshine days in December:
11.6 days
The month with the most sunshine days is November (16.1 days).
The month with the least sunshine days is February (9.1 days).
Average UV index
Radnor, OH
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Radnor, OH
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility
Radnor, OH
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
