Halfway Lake Weather Forecast
- 19
- 50
Rain
- 27
- 33
Mostly Cloudy
- 18
- 34
Partly Sunny
- 21
- 31
Chance Rain/Snow
- 29
- 37
Slight Chance Rain
- 27
- 39
Chance Freezing Rain
Today 19 Dec Union
Rain in the Morning, then a chance of rain Showers with a slight chance of snow Showers in the afternoon. Little or no snow accumulation. Highs in the upper 40s. Temperature falling into the upper 20s in the afternoon. West Winds 15 to 20 Mph. Gusts up to 40 Mph, increasing to 50 Mph in the afternoon. Chance of precipitation near 100 percent.
Tonight 19 Dec Union
Rain, mild. Lows in the lower 40s. South Winds 15 to 20 Mph with Gusts up to 40 Mph. Chance of rain near 100 percent.
Halfway Lake Temperature Statistics
December Temperature
Selinsgrove Penn Valley Airport (20.5 miles)
Lowest 9 December, 2025
5 °FAverage December
26.2 °FHighest 1 December, 2025
39 °F
Climate (2020–Present)
Selinsgrove Penn Valley Airport (20.5 miles)
Average Low 2020–2025
42.4 °FAverage 2020–2025
52.6 °FAverage High 2020–2025
63.1 °F