Herndon, PA Weather Forecast
Local 7-day forecast
Clear
Track current conditions, temperature changes, wind, and the full daily outlook for Herndon, PA in one place.
Clear, with a low around 42. North wind around 5 mph.
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: May 31, 2026 3:56 AM EDT.
The active forecast window currently covers May 31 to Jun 6, 2026 for Herndon, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 31 to Jun 6, 2026
- Latest sync
- May 31, 2026 3:56 AM EDT
- Forecast office
- CTP
- Source
- NOAA / NWS
Daily Outlook
This Week in Herndon
Friday looks like the warmest upcoming period in Herndon at 86 degrees F.
Overnight is the coolest period ahead with temperatures near 42 degrees F.
The strongest winds are forecast for Monday at about 2 to 8 mph N.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- May 31, 2026 3:56 AM EDT
- Coverage
- 7 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
Sunny, with a high near 75. Northwest wind 1 to 6 mph.
Partly cloudy, with a low around 51. West wind 1 to 6 mph.
Sunny, with a high near 75. North wind 2 to 8 mph.
Mostly clear, with a low around 51. Northeast wind 2 to 8 mph.
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 73. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 51.
Mostly sunny, with a high near 75.
Mostly clear, with a low around 52.
Sunny, with a high near 81.
Mostly clear, with a low around 58.
Mostly sunny, with a high near 86.
A slight chance of rain showers after 2am. Partly cloudy, with a low around 62.
A slight chance of rain showers before 2pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
May 31
|
Clear
|
42°F |
5 mph
N
|
|
Sunday
May 31
|
Sunny
|
75°F |
1 to 6 mph
NW
|
|
Sunday Night
May 31
|
Partly Cloudy
|
51°F |
1 to 6 mph
W
|
|
Monday
Jun 1
|
Sunny
|
75°F |
2 to 8 mph
N
|
|
Monday Night
Jun 1
|
Mostly Clear
|
51°F |
2 to 8 mph
NE
|
|
Tuesday
Jun 2
|
Sunny then Slight Chance Showers And Thunderstorms
|
73°F |
2 to 8 mph
NE
|
|
Tuesday Night
Jun 2
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
51°F |
3 to 8 mph
N
|
|
Wednesday
Jun 3
|
Mostly Sunny
|
75°F |
3 to 7 mph
N
|
|
Wednesday Night
Jun 3
|
Mostly Clear
|
52°F |
1 to 6 mph
N
|
|
Thursday
Jun 4
|
Sunny
|
81°F |
1 to 5 mph
N
|
|
Thursday Night
Jun 4
|
Mostly Clear
|
58°F |
1 to 5 mph
NW
|
|
Friday
Jun 5
|
Mostly Sunny
|
86°F |
1 to 7 mph
W
|
|
Friday Night
Jun 5
|
Partly Cloudy then Slight Chance Rain Showers
|
62°F |
3 to 7 mph
W
|
|
Saturday
Jun 6
|
Slight Chance Rain Showers then Chance Showers And Thunderstorms
|
86°F |
3 to 8 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Herndon.