Union, PA Weather Forecast
Local 7-day forecast
Smoke then Patchy Smoke
Track current conditions, temperature changes, wind, and the full daily outlook for Union, PA in one place.
Smoke and a chance of showers and thunderstorms before 10am, then areas of smoke and showers and thunderstorms likely between 10am and noon, then patchy smoke and showers and thunderstorms between noon and 3pm, then showers and thunderstorms likely between 3pm and 4pm, then showers and thunderstorms. Some of the storms could be severe and produce heavy rain. Mostly cloudy, with a high near 85. South wind 6 to 9 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Local Weather Overview
This forecast page for Union, 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: Jul 18, 2026 12:53 AM EDT.
The active forecast window currently covers Jul 18 to Jul 24, 2026 for Union, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 18 to Jul 24, 2026
- Latest sync
- Jul 18, 2026 12:53 AM EDT
- Forecast office
- CTP
- Source
- NOAA / NWS
Daily Outlook
This Week in Union
Saturday looks like the warmest upcoming period in Union at 85 degrees F.
Sunday Night is the coolest period ahead with temperatures near 60 degrees F.
The strongest winds are forecast for Tuesday Night at about 13 mph SW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 18, 2026 12:53 AM EDT
- Coverage
- 7 days
- Time zone
- America/New_York
- Forecast office
- CTP
- Radar station
- KDOX
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 8pm, then showers and thunderstorms likely between 8pm and midnight, then a slight chance of showers and thunderstorms between midnight and 1am. Some of the storms could be severe and produce heavy rain. Mostly cloudy, with a low around 69. Southwest wind 8 to 12 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Sunny, with a high near 81. Northwest wind around 12 mph.
Mostly clear, with a low around 60. North wind 2 to 7 mph.
Sunny, with a high near 82.
Partly cloudy, with a low around 67.
A chance of showers and thunderstorms after 8am. Mostly cloudy, with a high near 85. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 8pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 70. Chance of precipitation is 70%.
A chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 63. Chance of precipitation is 40%.
Sunny, with a high near 80.
Mostly clear, with a low around 62.
Sunny, with a high near 82.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Jul 18
|
Smoke then Patchy Smoke
|
85°F |
6 to 9 mph
S
|
|
Saturday Night
Jul 18
|
Showers And Thunderstorms Likely
|
69°F |
8 to 12 mph
SW
|
|
Sunday
Jul 19
|
Sunny
|
81°F |
12 mph
NW
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
60°F |
2 to 7 mph
N
|
|
Monday
Jul 20
|
Sunny
|
82°F |
6 mph
SE
|
|
Monday Night
Jul 20
|
Partly Cloudy
|
67°F |
8 mph
SE
|
|
Tuesday
Jul 21
|
Chance Showers And Thunderstorms
|
85°F |
8 to 12 mph
S
|
|
Tuesday Night
Jul 21
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
70°F |
13 mph
SW
|
|
Wednesday
Jul 22
|
Chance Showers And Thunderstorms
|
83°F |
13 mph
W
|
|
Wednesday Night
Jul 22
|
Chance Showers And Thunderstorms then Partly Cloudy
|
63°F |
10 mph
NW
|
|
Thursday
Jul 23
|
Sunny
|
80°F |
8 mph
NW
|
|
Thursday Night
Jul 23
|
Mostly Clear
|
62°F |
5 mph
NW
|
|
Friday
Jul 24
|
Sunny
|
82°F |
5 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Union.
