South Union, PA Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for South Union, PA in one place.
Mostly sunny, with a high near 74. Southwest wind 5 to 14 mph, with gusts as high as 24 mph.
Local Weather Overview
This forecast page for South 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: Oct 12, 2026 8:16 AM EDT.
The active forecast window currently covers Oct 13 to Oct 18, 2026 for South Union, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 13 to Oct 18, 2026
- Latest sync
- Oct 12, 2026 8:16 AM EDT
- Forecast office
- CTP
- Source
- NOAA / NWS
Daily Outlook
This Week in South Union
Tuesday looks like the warmest upcoming period in South Union at 74 degrees F.
Saturday Night is the coolest period ahead with temperatures near 29 degrees F.
The strongest winds are forecast for Saturday at about 18 to 22 mph NW.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 12, 2026 8:16 AM EDT
- Coverage
- 6 days
- Time zone
- America/New_York
- Forecast office
- CTP
- Radar station
- KBGM
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 61. Southwest wind 5 to 10 mph, with gusts as high as 21 mph.
A chance of rain showers after 8am. Partly sunny, with a high near 70. West wind 5 to 9 mph. Chance of precipitation is 30%.
A chance of rain showers before 2am. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.
A chance of rain showers after 2pm. Partly sunny, with a high near 60. Chance of precipitation is 30%.
Rain showers. Mostly cloudy, with a low around 50. Chance of precipitation is 80%.
Rain showers. Mostly cloudy, with a high near 62. Chance of precipitation is 80%.
A chance of rain showers before 5am, then a slight chance of rain and snow showers. Mostly cloudy, with a low around 35. Chance of precipitation is 50%.
A slight chance of rain and snow showers before 8am. Mostly sunny, with a high near 44.
Widespread frost after 10pm. Mostly clear, with a low around 29.
Widespread frost before 10am. Sunny, with a high near 52.
Widespread frost after midnight. Mostly clear, with a low around 33.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Oct 13
|
Mostly Sunny
|
74°F |
5 to 14 mph
SW
|
|
Tuesday Night
Oct 13
|
Partly Cloudy
|
61°F |
5 to 10 mph
SW
|
|
Wednesday
Oct 14
|
Chance Rain Showers
|
70°F |
5 to 9 mph
W
|
|
Wednesday Night
Oct 14
|
Chance Rain Showers
|
50°F |
7 mph
NW
|
|
Thursday
Oct 15
|
Partly Sunny then Chance Rain Showers
|
60°F |
7 mph
NE
|
|
Thursday Night
Oct 15
|
Rain Showers
|
50°F |
3 to 16 mph
SE
|
|
Friday
Oct 16
|
Rain Showers
|
62°F |
13 to 18 mph
SW
|
|
Friday Night
Oct 16
|
Chance Rain Showers then Slight Chance Rain And Snow Showers
|
35°F |
21 mph
NW
|
|
Saturday
Oct 17
|
Slight Chance Rain And Snow Showers then Mostly Sunny
|
44°F |
18 to 22 mph
NW
|
|
Saturday Night
Oct 17
|
Widespread Frost
|
29°F |
3 to 16 mph
NW
|
|
Sunday
Oct 18
|
Widespread Frost then Sunny
|
52°F |
3 to 9 mph
SW
|
|
Sunday Night
Oct 18
|
Mostly Clear then Widespread Frost
|
33°F |
5 to 8 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around South Union.
