Flagstaff, AZ

Arizona · Records since 1898–2026

☀️ 86°F Feels like 81°
Currently in Flagstaff
As of 5:00 PM MST

Records for July 28

🔥 Record High

94°F

July 28, 1995

+13° from 81° normal

❄ Record Low

36°F

July 28, 1913

-17° from 53° normal
🌞 Normal high: 81°F 🌑 Normal low: 53°F 1991–2020 normals

All-Time Records — Flagstaff

🔥
97°F
Hottest Day Ever
Jul 5, 1973
-30°F
Coldest Day Ever
Jan 22, 1937
🌧
3.93"
Wettest Day Ever
Feb 19, 1993
35.9"
Most Snow in One Day
Feb 21, 2019

Top 10 Record Highs — July 28

# Temp Date
🏆 94°F July 28, 1995
2 91°F July 28, 1993
3 90°F July 28, 1947
4 89°F July 28, 2023
5 89°F July 28, 1991
6 89°F July 28, 1972
7 89°F July 28, 1971
8 88°F July 28, 2019
9 88°F July 28, 2009
10 88°F July 28, 2001

Top 5 Record Lows — July 28

# Temp Date
🥶 36°F July 28, 1913
2 40°F July 28, 1909
3 42°F July 28, 1986
4 42°F July 28, 1970
5 44°F July 28, 1907
About this data — Records are sourced from the NOAA Threadex dataset via RCC ACIS, a quality-controlled record for long-term climate stations. Threadex adjusts for station relocations and observation-time changes, making records comparable across all years since 1898–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Flagstaff

threshold: 87°F (90th percentile of historical Jun–Aug highs)
4.6
Avg heat wave length
days (historical)
91°
Avg peak temp
during heat waves
0
Dangerous nights 2026
Overnights ≥ 70°F
1
Heat waves 2026
so far

2026 Daily High Temperature vs Normal

Year to date
Above normal Below normal

146 of 207 days with data were above the 1991–2020 normal high for their date.


Days ≥ 90°F Per Year

1900–2026
3
2026 so far
5
Avg/year 1970–2025
8
Avg/year (last 10 complete)
15
Most in a year (1974)

Average 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

44
2026 so far
above-normal nights
39.7
Avg / summer
1970–2020
79
Most in a summer
2024

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

7.91"
2026 YTD
Normal: 10.09"
-2.18"
3.42"
July so far
July normal: 2.61"
+0.81"
3.56"
Summer so far
Summer normal: 5.95"
-2.39"
1
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")

Compare year-to-year changes in days with heavy rainfall (≥ 1.0")