Jaars Weather Forecast
- 16
- 47
Chance Rain Showers
- 24
- 38
Sunny
- 32
- 50
Mostly Sunny
- 37
- 58
Partly Sunny
- 48
- 62
Mostly Cloudy
- 34
- 60
Mostly Sunny
Today 14 Dec Union
Partly sunny with a chance of rain Showers in the Morning, then sunny in the afternoon. Breezy with Highs in the upper 40s. Temperature falling into the mid 30s in the afternoon. North Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 30 percent.
Tonight 14 Dec Union
Mostly cloudy with a 50 percent chance of Showers. Not as cool. Near steady Temperatures in the lower 50s. Temperature rising into the lower 50s. Southwest Winds 10 to 15 Mph.
Jaars Temperature Statistics
December Temperature
Lancaster County-mc Whirter Field (11.2 miles)
Lowest 4 December, 2025
28.4 °FAverage December
39.8 °FHighest 10 December, 2025
57.2 °F
Climate (2020–Present)
Lancaster County-mc Whirter Field (11.2 miles)
Average Low 2020–2025
51.9 °FAverage 2020–2025
62.2 °FAverage High 2020–2025
73.6 °F