Wilton climate

Wilton Weather in December

NOAA 1991-2020 normals for Stamford 5 N, 12 km from Wilton

Average highs run from 47°F on December 1 to 39°F on December 31, and lows from 31°F to 24°F. Normal precipitation for the month is 4.44 in over about 11 wet days.

December day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Wilton, in °F, with the record for each date.-20020406080151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

December at a glance

Average high
43°F
Average low
27°F
Precipitation
4.44 in
Snowfall
5.8 in
Record high
74°FDec 7, 1998
Record low
-4°FDec 14, 2005
Chance of a freeze
100%
Daylight
9 h 26 min to 9 h 16 min
Cloud cover
64%
Humidity
86%
Dew point
30°F
Wind
8.1 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Dec 147°F31°F67°F 200118°F 200236%5%
Dec 247°F31°F64°F 199817°F 200737%5%
Dec 347°F30°F64°F 200912°F 200237%6%
Dec 446°F30°F70°F 199810°F 200237%6%
Dec 546°F30°F64°F 200110°F 202537%6%
Dec 646°F29°F68°F 20017°F 200237%6%
Dec 745°F29°F74°F 19982°F 200237%7%
Dec 845°F29°F57°F 200412°F 201937%7%
Dec 945°F29°F55°F 20085°F 200237%7%
Dec 1044°F29°F62°F 20235°F 200237%7%
Dec 1144°F28°F66°F 20206°F 200037%7%
Dec 1244°F28°F63°F 201511°F 201337%8%
Dec 1343°F28°F63°F 201510°F 200537%8%
Dec 1443°F28°F63°F 2015-4°F 200537%8%
Dec 1543°F27°F65°F 2015-4°F 200537%8%
Dec 1642°F27°F64°F 20217°F 201337%9%
Dec 1742°F27°F64°F 20003°F 201337%9%
Dec 1842°F27°F63°F 20237°F 200737%9%
Dec 1942°F27°F60°F 20251°F 202037%9%
Dec 2041°F26°F58°F 19995°F 200437%10%
Dec 2141°F26°F62°F 20183°F 200437%10%
Dec 2241°F26°F68°F 20135°F 202437%10%
Dec 2341°F26°F61°F 2013-3°F 200837%10%
Dec 2441°F26°F69°F 20156°F 202237%11%
Dec 2540°F25°F64°F 20157°F 199837%11%
Dec 2640°F25°F54°F 20158°F 201737%11%
Dec 2740°F25°F58°F 20116°F 200437%11%
Dec 2840°F25°F62°F 20081°F 200437%12%
Dec 2940°F25°F58°F 20243°F 201737%12%
Dec 3039°F25°F64°F 20223°F 201737%12%
Dec 3139°F24°F55°F 20222°F 201737%12%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Wilton, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EST).

December 1
sunrise 7:00 AM, sunset 4:26 PM
December 31
sunrise 7:19 AM, sunset 4:35 PM

Every day of December: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00067970 (Stamford 5 N), public domain. Records: NOAA GHCN-Daily, station USW00054734, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.