Radnor, PA Weather Forecast
Local 7-day forecast
Mostly Sunny then Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Radnor, PA in one place.
A chance of showers and thunderstorms between 2pm and 5pm, then showers and thunderstorms likely. Mostly sunny. High near 92, with temperatures falling to around 85 in the afternoon. West wind 5 to 15 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Local Weather Overview
This forecast page for Radnor, PA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: May 19, 2026 8:49 PM EDT.
The active forecast window currently covers May 20 to May 26, 2026 for Radnor, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 20 to May 26, 2026
- Latest sync
- May 19, 2026 8:49 PM EDT
- Forecast office
- PHI
- Source
- NOAA / NWS
Daily Outlook
This Week in Radnor
Wednesday looks like the warmest upcoming period in Radnor at 92 degrees F.
Friday Night is the coolest period ahead with temperatures near 48 degrees F.
The strongest winds are forecast for Wednesday at about 5 to 15 mph W.
Precipitation is mentioned in 13 upcoming forecast periods.
Forecast Details
- Last updated
- May 19, 2026 8:49 PM EDT
- Coverage
- 7 days
- Time zone
- America/New_York
- Forecast office
- PHI
- Radar station
- KDIX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms likely before 9pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 55. North wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
A chance of rain showers. Mostly cloudy, with a high near 65. Northeast wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of rain showers before 8pm. Mostly cloudy, with a low around 51. East wind 0 to 5 mph. Chance of precipitation is 20%.
Rain showers likely after 8am. Mostly cloudy, with a high near 63. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Rain showers. Cloudy, with a low around 48. Chance of precipitation is 80%.
Rain showers. Cloudy, with a high near 60. Chance of precipitation is 80%.
Rain showers likely. Cloudy, with a low around 51. Chance of precipitation is 70%.
A chance of rain showers. Mostly cloudy, with a high near 68. Chance of precipitation is 50%.
A chance of rain showers. Mostly cloudy, with a low around 56. Chance of precipitation is 50%.
A chance of rain showers before 2pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a high near 74. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Chance of precipitation is 40%.
A chance of rain showers before 2pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a high near 76.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
May 20
|
Mostly Sunny then Chance Showers And Thunderstorms
|
92°F |
5 to 15 mph
W
|
|
Wednesday Night
May 20
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
55°F |
5 to 10 mph
N
|
|
Thursday
May 21
|
Chance Rain Showers
|
65°F |
5 to 10 mph
NE
|
|
Thursday Night
May 21
|
Slight Chance Rain Showers then Mostly Cloudy
|
51°F |
0 to 5 mph
E
|
|
Friday
May 22
|
Rain Showers Likely
|
63°F |
5 to 10 mph
E
|
|
Friday Night
May 22
|
Rain Showers
|
48°F |
5 mph
E
|
|
Saturday
May 23
|
Rain Showers
|
60°F |
5 to 10 mph
E
|
|
Saturday Night
May 23
|
Rain Showers Likely
|
51°F |
5 to 10 mph
E
|
|
Sunday
May 24
|
Chance Rain Showers
|
68°F |
5 to 10 mph
E
|
|
Sunday Night
May 24
|
Chance Rain Showers
|
56°F |
0 to 5 mph
E
|
|
Memorial Day
May 25
|
Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
74°F |
5 mph
N
|
|
Monday Night
May 25
|
Chance Showers And Thunderstorms
|
58°F |
0 to 5 mph
NE
|
|
Tuesday
May 26
|
Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
76°F |
0 to 5 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Radnor.