Sioux City, IA
Iowa · Records since 1889–2026
🌙 65°F
Currently in Sioux City
As of 1:00 AM CDT
Records for June 27
🔥 Record High
104°F
June 27, 1934
+20° from 84° normal❄ Record Low
46°F
June 27, 2022
-16° from 62° normal
🌞 Normal high: 84°F
🌑 Normal low: 62°F
1991–2020 normals
All-Time Records — Sioux City
111°F
Hottest Day Ever
Jul 11, 1939
-35°F
Coldest Day Ever
Jan 12, 1912
5.50"
Wettest Day Ever
Jul 17, 1972
20.0"
Most Snow in One Day
Apr 10, 1913
2026 Daily High Temperature vs Normal
Year to date
Above normal
Below normal
111 of 176 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1970–20269
2026 so far
27
Avg/year 1970–2025
30
Avg/year (last 10 complete)
56
Most in a year (2012)
Top 10 Record Highs — June 27
| # | Temp | Date |
|---|---|---|
| 🏆 | 104°F | June 27, 1934 |
| 2 | 101°F | June 27, 1931 |
| 3 | 100°F | June 27, 1943 |
| 4 | 99°F | June 27, 1936 |
| 5 | 97°F | June 27, 2012 |
| 6 | 97°F | June 27, 1980 |
| 7 | 97°F | June 27, 1971 |
| 8 | 96°F | June 27, 1991 |
| 9 | 96°F | June 27, 1954 |
| 10 | 96°F | June 27, 1947 |
Top 5 Record Lows — June 27
| # | Temp | Date |
|---|---|---|
| 🥶 | 46°F | June 27, 2022 |
| 2 | 46°F | June 27, 2017 |
| 3 | 46°F | June 27, 1976 |
| 4 | 46°F | June 27, 1968 |
| 5 | 49°F | June 27, 1905 |
Precipitation
Actual vs. 1991–2020 full-month and full-season normals
9.83"
2026 YTD
Normal: 14.00"
-4.17"
1.46"
June so far
June normal: 4.35"
-2.89"
1.46"
Summer so far
Summer normal: 11.64"
-10.18"
2
2026 heavy rain days
Days with ≥ 1.0"
Monthly Precipitation — Last 24 Months
Blue = actual · dashed line = monthly normal
Annual Precipitation Per Year (1970–2026)
Blue = above average · tan = below average · gold = 2026 (partial)
Heavy Rain Days Per Year (≥ 1.0")
Even when annual totals stay similar, storms can become more intense and concentrated
Warm Summer Nights (Jun–Aug)
Nights where the overnight low exceeded the 1991–2020 normal low
12
2026 so far
above-normal nights
48.1
Avg / summer
1970–2020
64
Most in a summer
1983
Above-Normal Summer Nights Per Year
Average June–August Low Temperature by Decade
Decade averages of the actual overnight low