Weather in Plano in December
In an average December, Plano sees a daily high around 58°F and a low around 41°F, based on 1980–2026 of local climate records.
| Average high | 58°F |
|---|---|
| Typical high range | 44°F to 71°F |
| Average low | 41°F |
| Typical low range | 29°F to 54°F |
| Average daily precipitation | 0.10 in |
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
86°F
2005-12-03
Lowest
17°F
1983-12-25
Low
Highest
68°F
2021-12-15
Lowest
-1°F
1989-12-23
Feels-like
Highest
92°F
2025-12-26
Lowest
-20°F
1989-12-23
Humidity
Highest
17.0 g/m³
2015-12-26
Lowest
0.9 g/m³
1989-12-23
Wind
Highest
28 mph
2009-12-24
Lowest
4 mph
2014-12-08
Gust
Highest
58 mph
1987-12-19
Lowest
8 mph
1986-12-16
Precip
Wettest
9.41 in
1991
Driest
0.43 in
2005
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