Peoria, IL
Illinois · Records since 1883–2026
Records for August 11
🔥 Record High
August 11, 1941
+16° from 85° normal❄ Record Low
August 11, 2004
-16° from 65° normalAll-Time Records — Peoria
Top 10 Record Highs — August 11
| # | Temp | Date |
|---|---|---|
| 🏆 | 101°F | August 11, 1941 |
| 2 | 97°F | August 11, 1923 |
| 3 | 97°F | August 11, 1899 |
| 4 | 97°F | August 11, 1896 |
| 5 | 97°F | August 11, 1886 |
| 6 | 96°F | August 11, 1988 |
| 7 | 96°F | August 11, 1935 |
| 8 | 94°F | August 11, 1947 |
| 9 | 94°F | August 11, 1937 |
| 10 | 94°F | August 11, 1920 |
Top 5 Record Lows — August 11
| # | Temp | Date |
|---|---|---|
| 🥶 | 49°F | August 11, 2004 |
| 2 | 51°F | August 11, 1982 |
| 3 | 51°F | August 11, 1967 |
| 4 | 51°F | August 11, 1966 |
| 5 | 52°F | August 11, 1968 |
Heat Wave Summary — Peoria
threshold: 94°F (90th percentile of historical Jun–Aug highs)2026 Daily High Temperature vs Normal
Year to date118 of 220 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1883–2026Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Peoria
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Jul 3, 1936 – Jul 18, 1936 | 16 | 113°F (Jul 15) | 105°F | 74°F |
| 2 | Jun 17, 1933 – Jun 27, 1933 | 11 | 101°F (Jun 26) | 96°F | 67°F |
| 3 | Jul 26, 1887 – Aug 4, 1887 | 10 | 104°F (Jul 29) | 99°F | 72°F |
| 4 | Jul 19, 1901 – Jul 27, 1901 | 9 | 106°F (Jul 24) | 101°F | 73°F |
| 5 | Jul 9, 1901 – Jul 17, 1901 | 9 | 104°F (Jul 10) | 96°F | 67°F |
| 6 | Jun 24, 1931 – Jul 2, 1931 | 9 | 103°F (Jun 29) | 101°F | 75°F |
| 7 | Aug 26, 1953 – Sep 3, 1953 | 9 | 100°F (Sep 1) | 96°F | 68°F |
| 8 | Aug 2, 1900 – Aug 10, 1900 | 9 | 99°F (Aug 5) | 97°F | 69°F |
| 9 | Sep 7, 1897 – Sep 15, 1897 | 9 | 97°F (Sep 10) | 96°F | 66°F |
| 10 | Jul 24, 1916 – Jul 31, 1916 | 8 | 103°F (Jul 29) | 100°F | 72°F |
Heat Waves Per Year
Warm Summer Nights (Jun–Aug)
Nights where the overnight low exceeded the 1991–2020 normal low
Above-Normal Summer Nights Per Year
Average June–August Low by Decade
Overnight lows · complete decades only
Precipitation
Actual vs. 1991–2020 full-month and full-season normals
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")
Compare year-to-year changes in days with heavy rainfall (≥ 1.0")
Month in Review — July 2026
Average temperature · July 2026
66th-warmest month on record
48th-warmest July of 144 on record
+1.4° vs. 75.9° average (1991–2020)Longest 90°F Streak in July
5 consecutive days with highs of at least 90°F (Jul 14–18, 2026, peaking at 94°F)
Ties the longest July streak since 2023 (3 years). The July record is 21 days, set in 1916.
Average July Temperature by Year
1883–2026 · 2026 highlighted
Warmest Julys on Record
| # | Year | Avg Temp |
|---|---|---|
| 1 | 1936 | 84.3°F |
| 2 | 1887 | 82.7°F |
| 3 | 2012 | 82.4°F |
| 4 | 1901 | 82.4°F |
| 5 | 1893 | 81.3°F |
| 6 | 1916 | 81.0°F |
| 7 | 1934 | 81.0°F |
| 8 | 1955 | 80.9°F |
| 9 | 2011 | 80.7°F |
| 10 | 1885 | 80.3°F |
Warmest Months on Record (Any Month)
| # | Month | Avg Temp |
|---|---|---|
| 1 | July 1936 | 84.3°F |
| 2 | July 1887 | 82.7°F |
| 3 | July 2012 | 82.4°F |
| 4 | July 1901 | 82.4°F |
| 5 | August 1947 | 82.0°F |
| 6 | July 1893 | 81.3°F |
| 7 | July 1916 | 81.0°F |
| 8 | July 1934 | 81.0°F |
| 9 | July 1955 | 80.9°F |
| 10 | August 1983 | 80.8°F |
Nearby Stations — July 2026
How the same month ranked at the closest reporting stations
| Station | Avg Temp | July Rank |
|---|---|---|
| Peoria, IL | 77.3°F | 48th of 144 |
| Springfield, IL | 76.7°F | 70th of 148 |
| Moline, IL | 76.5°F | 50th of 153 |
| Burlington, IA | 76.7°F | 55th of 127 |
| Quincy, IL | 78.0°F | 50th of 125 |