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Weather on January 21

Madison, WI

55 Years of Data

Avg High
26°F
Avg Low
6°F
Warmest
2018
37°F avg
Coldest
1984
-10°F avg

About This Date

January 21st in Madison, WI typically brings very cold winter weather, with average highs around 26°F and lows near 6°F. Over 56 years of records, the warmest January 21st was in 2018 (37°F average), while the coldest was 1984 (-10°F) — a 47°F range across recorded history. Precipitation has occurred on 25% of recorded January 21st dates, with snow falling 16% of the time (heaviest snowfall: 4.2"). Temperatures on this date have remained relatively stable over the past several decades.

Temperatures on this date have remained relatively stable over the past several decades.

Planning for January 21st in Madison, WI? Bundle up with warm layers and protect extremities from the cold.

Cooling Trend
1.2°F per decade on this date
YearHighLowAvgPrecipSnow
202618°-5°0.09"4.2"
2025-14°-4°
202419°-6°
202328°22°25°
202212°-8°
202135°21°
202026°15°
2019-15°
2018warmest50°23°37°
201739°32°36°0.1"
201624°10°17°
201532°26°29°0.08"1"
201426°-6°10°0.05"0.5"
201315°
201220°-9°4"
201119°-13°
201030°25°27°
200922°12°17°
2008-12°-3°0.03"0.5"
200722°10°16°
200631°10°20°0.4"3"
200523°17°20°0.05"
200420°12°
200316°
200232°21°27°
200121°-2°10°
200012°-7°
199934°16°25°
199828°20°24°0.12"4"
199737°10°24°
199622°11°
199524°20°22°
199410°-29°-9°
199336°-3°17°0.36"
199231°10°20°
199128°14°0.02"0.5"
199032°19°26°0.21"
198931°10°20°
198834°12°23°
198726°10°18°
198633°25°29°
198512°-24°-6°
1984coldest-26°-10°
198333°19°26°
198221°12°17°0.18"2.2"
198141°15°28°
198035°10°23°
197929°21°25°
197823°12°
197726°15°
197622°14°0.09"
197535°-7°14°
197435°32°34°0.33"
197330°20°25°
197223°16°
197134°18°26°
56 years of data from UW ARBORETUM - MADISON

Madison, WI Temperature Range by Month

Average monthly highs and lows. The shaded band shows the typical daily temperature range.

0°20°40°60°80°JFMAMJJASOND
Avg high Avg low

Madison, WI Monthly Precipitation

Average rainfall and snowfall per month, in inches.

0"0.2"0.5"JFMAMJJASOND1.7"0"
Rain (in) Snow (in)

Madison, WI Daily Temperature Calendar

Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.

151015202531JanFebMarAprMayJunJulAugSepOctNovDec
Cooler
Hotter
20°40°60°80°100°

Best Time to Visit Madison, WI

Most pleasant months in Madison, WI: May, June, August, September.

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Pleasant (65-82°F, ≤2.5" rain) Mild Less ideal

What to expect on January 21st

This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.

January 21st outlook →

Browse Weather History

Weather data provided by NOAA Climate Data Online. Not for critical planning.

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