Weather in Nepean in December
In an average December, Nepean sees a daily high around -2°C and a low around -9°C, based on 1980–2026 of local climate records.
| Average high | -2°C |
|---|---|
| Typical high range | -10°C to 5°C |
| Average low | -9°C |
| Typical low range | -19°C to 0°C |
| Average daily precipitation | 3 mm |
December records
The most extreme December on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total December accumulation.
High
Highest
17°C
2015-12-24
Lowest
-22°C
1993-12-27
Low
Highest
8°C
2015-12-11
Lowest
-33°C
1980-12-25
Feels-like
Highest
5°C
2015-12-11
Lowest
-48°C
1980-12-25
Humidity
Highest
9.6 g/m³
1982-12-03
Lowest
0.3 g/m³
1980-12-25
Wind
Highest
39 km/h
1999-12-11
Lowest
5 km/h
1985-12-11
Gust
Highest
93 km/h
2022-12-23
Lowest
10 km/h
2024-12-26
Precip
Wettest
146 mm
2012
Driest
25 mm
2002
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