Click on a day for an hourly weather forecast
The temperatures in Union City in May are comfortable with low of 10°C and and high up to 22°C.
The wather in Union City in May can vary between cold and nice weather days. Expect a few rainy days but usually not more than 3.
Our weather forecast can give you a great sense of what weather to expect in Union City in May 2025.
If you’re planning to visit Union City in the near future, we highly recommend that you review the 14 day weather forecast for Union City before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 16° / 7° | 4 | 27 | 0 | 36 mm | Good | Union City in January |
| February | 17° / 7° | 3 | 25 | 0 | 36 mm | Good | Union City in February |
| March | 18° / 7° | 3 | 28 | 0 | 39 mm | Good | Union City in March |
| April | 20° / 8° | 2 | 28 | 0 | 17 mm | Good | Union City in April |
| May | 22° / 10° | 1 | 30 | 0 | 8 mm | Good | Union City in May |
| June | 26° / 13° | 1 | 29 | 0 | 4 mm | Perfect | Union City in June |
| July | 28° / 14° | 0 | 31 | 0 | 1 mm | Perfect | Union City in July |
| August | 28° / 15° | 0 | 31 | 0 | 1 mm | Perfect | Union City in August |
| September | 28° / 15° | 0 | 30 | 0 | 3 mm | Perfect | Union City in September |
| October | 24° / 13° | 1 | 30 | 0 | 16 mm | Perfect | Union City in October |
| November | 19° / 10° | 2 | 28 | 0 | 23 mm | Good | Union City in November |
| December | 15° / 7° | 4 | 27 | 0 | 34 mm | Good | Union City in December |