Herndon, PA Weather Forecast
Local 7-day forecast
Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Herndon, PA in one place.
Partly sunny, with a high near 83.
Local Weather Overview
This forecast page for Herndon, 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: Apr 13, 2026 11:48 PM EDT.
The active forecast window currently covers Apr 16 to Apr 20, 2026 for Herndon, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 16 to Apr 20, 2026
- Latest sync
- Apr 13, 2026 11:48 PM EDT
- Forecast office
- CTP
- Source
- NOAA / NWS
Daily Outlook
This Week in Herndon
Thursday looks like the warmest upcoming period in Herndon at 83 degrees F.
Sunday Night is the coolest period ahead with temperatures near 36 degrees F.
The strongest winds are forecast for Sunday Night at about 10 to 14 mph W.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 13, 2026 11:48 PM EDT
- Coverage
- 5 days
- Time zone
- America/New_York
- Forecast office
- CTP
- Radar station
- KCCX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of rain showers after 8pm. Mostly cloudy, with a low around 61. Chance of precipitation is 30%.
A chance of rain showers before 2pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 77. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 56.
A slight chance of rain showers after 2pm. Mostly sunny, with a high near 81.
A chance of rain showers. Mostly cloudy, with a low around 56. Chance of precipitation is 40%.
A chance of rain showers. Mostly cloudy, with a high near 69. Chance of precipitation is 50%.
A chance of rain showers before 2am. Mostly cloudy, with a low around 36. Chance of precipitation is 50%.
Mostly sunny, with a high near 55.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Apr 16
|
Partly Sunny
|
83°F |
2 to 7 mph
SW
|
|
Thursday Night
Apr 16
|
Chance Rain Showers
|
61°F |
7 mph
SW
|
|
Friday
Apr 17
|
Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
77°F |
5 to 8 mph
W
|
|
Friday Night
Apr 17
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
56°F |
2 to 8 mph
NW
|
|
Saturday
Apr 18
|
Mostly Sunny then Slight Chance Rain Showers
|
81°F |
2 to 9 mph
SE
|
|
Saturday Night
Apr 18
|
Chance Rain Showers
|
56°F |
9 mph
S
|
|
Sunday
Apr 19
|
Chance Rain Showers
|
69°F |
8 to 13 mph
W
|
|
Sunday Night
Apr 19
|
Chance Rain Showers
|
36°F |
10 to 14 mph
W
|
|
Monday
Apr 20
|
Mostly Sunny
|
55°F |
12 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Herndon.