Historical Weather Records & Monthly Climate for Sioux City, IA

All-Time High
103°F
All-Time Low
-36°F
Max Daily Snow
11.6"
Max Wind Gust
76 mph

Monthly Climate Averages

Based on 30 years of historical data (1994 - 2023)

MonthHigh (°F)Low (°F)Precip (in)Snow (in)
January29°12°0.96"5.7"
February33°15°1.07"5.2"
March47°27°2.03"4.59"
April59°39°3.68"2.67"
May70°51°4.65"0.04"
June80°62°4.49"0
July84°67°2.76"0
August82°65°3.51"0
September76°58°2.77"0
October61°44°2.51"0.64"
November47°30°1.41"2.58"
December33°18°1.25"5.16"

Historical Weather Extremes

Based on 80+ years of archive data (1940 - 2024)

🔥
Longest Heatwave
13 Days
2012
Consecutive days ≥ 90°F
🧊
Deepest Freeze
52 Days
1979
Consecutive days ≤ 32°F
🏜️
Longest Drought
55 Days
1952
Consecutive days w/o rain
Wettest Month
12.55"
June 2014
Most rainfall in one month
Snowiest Month
22.65"
December 1968
Most snowfall in one month

More Historical Climate Data for Cities in


IA