Flagstaff, AZ
Arizona · Records since 1898–2026
Records for August 11
🔥 Record High
August 11, 1980
+11° from 80° normal❄ Record Low
August 11, 1900
-16° from 52° normalAll-Time Records — Flagstaff
Top 10 Record Highs — August 11
| # | Temp | Date |
|---|---|---|
| 🏆 | 91°F | August 11, 1980 |
| 2 | 91°F | August 11, 1937 |
| 3 | 90°F | August 11, 2002 |
| 4 | 90°F | August 11, 1940 |
| 5 | 89°F | August 11, 2025 |
| 6 | 88°F | August 11, 1996 |
| 7 | 88°F | August 11, 1973 |
| 8 | 88°F | August 11, 1962 |
| 9 | 88°F | August 11, 1944 |
| 10 | 88°F | August 11, 1933 |
Top 5 Record Lows — August 11
| # | Temp | Date |
|---|---|---|
| 🥶 | 36°F | August 11, 1900 |
| 2 | 39°F | August 11, 1949 |
| 3 | 41°F | August 11, 1899 |
| 4 | 42°F | August 11, 1951 |
| 5 | 43°F | August 11, 1999 |
Heat Wave Summary — Flagstaff
threshold: 87°F (90th percentile of historical Jun–Aug highs)2026 Daily High Temperature vs Normal
Year to date159 of 221 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1900–2026Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Flagstaff
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Jun 11, 1974 – Jun 30, 1974 | 20 | 94°F (Jun 24) | 91°F | 51°F |
| 2 | Jul 12, 2023 – Jul 29, 2023 | 18 | 96°F (Jul 16) | 91°F | 56°F |
| 3 | Jul 4, 2003 – Jul 17, 2003 | 14 | 94°F (Jul 9) | 90°F | 52°F |
| 4 | Jun 20, 1990 – Jul 1, 1990 | 12 | 94°F (Jun 25) | 92°F | 52°F |
| 5 | Jul 3, 2024 – Jul 14, 2024 | 12 | 94°F (Jul 7) | 91°F | 52°F |
| 6 | Jun 16, 2017 – Jun 26, 2017 | 11 | 93°F (Jun 23) | 90°F | 51°F |
| 7 | Aug 2, 2025 – Aug 12, 2025 | 11 | 91°F (Aug 12) | 88°F | 51°F |
| 8 | Jul 12, 2005 – Jul 21, 2005 | 10 | 93°F (Jul 18) | 90°F | 54°F |
| 9 | Jun 30, 1989 – Jul 8, 1989 | 9 | 96°F (Jul 6) | 91°F | 48°F |
| 10 | Jul 1, 1985 – Jul 9, 1985 | 9 | 94°F (Jul 4) | 90°F | 53°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
10th-warmest month on record
9th-warmest July of 128 on record
+1.8° vs. 66.7° average (1991–2020)Longest 90°F Streak in July
2 consecutive days with highs of at least 90°F (Jul 8–9, 2026, peaking at 90°F)
Ties the longest July streak since 2025 (1 year). The July record is 10 days, set in 2023.
Average July Temperature by Year
1899–2026 · 2026 highlighted
Warmest Julys on Record
| # | Year | Avg Temp |
|---|---|---|
| 1 | 2023 | 71.4°F |
| 2 | 2024 | 70.6°F |
| 3 | 2002 | 70.0°F |
| 4 | 2003 | 69.5°F |
| 5 | 1901 | 69.3°F |
| 6 | 1980 | 69.0°F |
| 7 | 1931 | 68.7°F |
| 8 | 2007 | 68.6°F |
| 9 | 2026 | 68.5°F |
| 10 | 1996 | 68.4°F |
Warmest Months on Record (Any Month)
| # | Month | Avg Temp |
|---|---|---|
| 1 | July 2023 | 71.4°F |
| 2 | July 2024 | 70.6°F |
| 3 | July 2002 | 70.0°F |
| 4 | July 2003 | 69.5°F |
| 5 | July 1901 | 69.3°F |
| 6 | July 1980 | 69.0°F |
| 7 | August 2020 | 68.8°F |
| 8 | July 1931 | 68.7°F |
| 9 | July 2007 | 68.6°F |
| 10 | July 2026 | 68.5°F |
Nearby Stations — July 2026
How the same month ranked at the closest reporting stations
| Station | Avg Temp | July Rank |
|---|---|---|
| Flagstaff, AZ | 68.5°F | 9th of 128 |
| Winslow, AZ | 80.5°F | 13th of 112 |
| Phoenix, AZ | 97.4°F | 6th of 131 |
| Kingman, AZ | 86.1°F | 7th of 110 |
| Lake Havasu City, AZ | 98.1°F | 15th of 43 |