Union, SC Weather & Climate Normals
What a normal year in Union actually looks like
On the 30-year record NOAA keeps for Union, SC, the comfort score comes out to 47/100, strongly seasonal: Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. Only 4 months a year land in the 55–75°F range this site treats as mild.
How much Union's weather actually swings
Average temperatures in Union run from 41°F in Jan up to 79°F in Jul, a 38.4°F seasonal swing, a middling gap by national standards.
Union, month by month
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 53°F | 29°F | 4.19in | 0.9in |
| Feb | 57°F | 32°F | 3.61in | 0.6in |
| Mar | 65°F | 38°F | 4.29in | 0.4in |
| Apr | 74°F | 47°F | 3.75in | 0in |
| May | 81°F | 55°F | 3.13in | 0in |
| Jun | 87°F | 65°F | 4.09in | 0in |
| Jul | 90°F | 68°F | 3.67in | 0in |
| Aug | 89°F | 67°F | 3.99in | 0in |
| Sep | 83°F | 61°F | 3.37in | 0in |
| Oct | 74°F | 48°F | 3.33in | 0in |
| Nov | 63°F | 37°F | 3.56in | 0in |
| Dec | 55°F | 32°F | 4.27in | 0in |
If you're timing a visit, Apr, May, Sep, and Oct are Union's mildest stretch; if you're moving there, you should plan around Jul's heat and Jan's cold instead.
How wet Union actually gets
Over a typical year, Union sees about 45.25in of precipitation a year across roughly 104 days with measurable rain or snow, with 1.9in of snow a year.
Union against the rest of the country
Out of 4876 cities scored here, Union comes in at 2797; within SC alone it ranks 59 of 66. Population is about 7,988.
Checking the actual forecast
These figures come from Union 8 S, SC US, the NOAA station 8.5 miles from Union, averaged over 30 years, not tomorrow's forecast.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is