Sterling-Dulles Airport, VA
Virginia · Records since 1960–2026
☀️ 81°F
Feels like 85°
Currently in Sterling-Dulles Airport
As of 8:00 PM EDT
Records for July 28
🔥 Record High
99°F
July 28, 1993
+11° from 88° normal❄ Record Low
47°F
July 28, 1977
-20° from 67° normal
🌞 Normal high: 88°F 🌑 Normal low: 67°F 1991–2020 normals
All-Time Records — Sterling-Dulles Airport
105°F
Hottest Day Ever
Jul 22, 2011
-18°F
Coldest Day Ever
Jan 22, 1984
10.67"
Wettest Day Ever
Jun 21, 1972
22.5"
Most Snow in One Day
Feb 11, 1983
Top 10 Record Highs — July 28
| # | Temp | Date |
|---|---|---|
| 🏆 | 99°F | July 28, 1993 |
| 2 | 98°F | July 28, 2023 |
| 3 | 97°F | July 28, 1997 |
| 4 | 96°F | July 28, 1986 |
| 5 | 94°F | July 28, 2019 |
| 6 | 94°F | July 28, 2002 |
| 7 | 94°F | July 28, 1963 |
| 8 | 93°F | July 28, 2025 |
| 9 | 93°F | July 28, 2021 |
| 10 | 93°F | July 28, 2011 |
Top 5 Record Lows — July 28
| # | Temp | Date |
|---|---|---|
| 🥶 | 47°F | July 28, 1977 |
| 2 | 48°F | July 28, 1962 |
| 3 | 55°F | July 28, 1984 |
| 4 | 56°F | July 28, 2001 |
| 5 | 57°F | July 28, 1978 |
Heat Wave Summary — Sterling-Dulles Airport
threshold: 94°F (90th percentile of historical Jun–Aug highs)4.2
Avg heat wave length
days (historical)
98°
Avg peak temp
during heat waves
17
Dangerous nights 2026
Overnights ≥ 70°F
2
Heat waves 2026
so far
2026 Daily High Temperature vs Normal
Year to date
Above normal
Below normal
111 of 207 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1960–202620
2026 so far
31
Avg/year 1970–2025
41
Avg/year (last 10 complete)
58
Most in a year (2010)
Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Sterling-Dulles Airport
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Jul 3, 1993 – Jul 11, 1993 | 9 | 100°F (Jul 8) | 97°F | 70°F |
| 2 | Jul 13, 1997 – Jul 19, 1997 | 7 | 100°F (Jul 17) | 96°F | 65°F |
| 3 | Jul 30, 1995 – Aug 5, 1995 | 7 | 99°F (Aug 5) | 96°F | 68°F |
| 4 | Aug 11, 2016 – Aug 17, 2016 | 7 | 99°F (Aug 13) | 96°F | 74°F |
| 5 | Jul 4, 2024 – Jul 10, 2024 | 7 | 99°F (Jul 6) | 97°F | 75°F |
| 6 | Aug 25, 1993 – Aug 31, 1993 | 7 | 98°F (Aug 28) | 95°F | 70°F |
| 7 | Jul 6, 1988 – Jul 11, 1988 | 6 | 101°F (Jul 7) | 99°F | 65°F |
| 8 | Jul 18, 1991 – Jul 23, 1991 | 6 | 101°F (Jul 21) | 97°F | 71°F |
| 9 | Jul 3, 2012 – Jul 8, 2012 | 6 | 101°F (Jul 7) | 98°F | 73°F |
| 10 | Jul 22, 2016 – Jul 27, 2016 | 6 | 100°F (Jul 25) | 96°F | 72°F |
Heat Waves Per Year
Warm Summer Nights (Jun–Aug)
Nights where the overnight low exceeded the 1991–2020 normal low
37
2026 so far
above-normal nights
41.2
Avg / summer
1970–2020
64
Most in a summer
2020
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
24.55"
2026 YTD
Normal: 25.06"
-0.51"
5.34"
July so far
July normal: 4.15"
+1.19"
9.63"
Summer so far
Summer normal: 11.98"
-2.35"
5
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")