Washington/Dulles Intl
Weather station · 38.9°N 77.4°W · 90 m above sea level
ICAO KIADWMO 72403Station data since 1960
Record high
34.4°C
in 2019
Record low
0.6°C
in 1983
Average high
24.4°C
all years on record
19.4°C short of the record for 23 September
Today’s high 15.0°C against 34.4°C in 2019. A reading that beats it is flagged here automatically, once a second cycle confirms it.
All-time record high
40.6°C
- Date
- Friday, 22 July 2011
- Time of day
- Not recorded. The daily archive stores the day, not the hour.
- Location
- Washington/Dulles Intl, United States
- Position
- 38.93°N 77.45°W · 90 m
Highest highest in available records since 1960. Source: NOAA GHCN-Daily.
All-time record low
−27.8°C
- Date
- Sunday, 22 January 1984
- Time of day
- Not recorded. The daily archive stores the day, not the hour.
- Location
- Washington/Dulles Intl, United States
- Position
- 38.93°N 77.45°W · 90 m
Highest and lowest lowest in available records since 1960. Source: NOAA GHCN-Daily.
Where Washington/Dulles Intl is
38.93°N 77.45°W
Washington/Dulles Intl
Ground · satellite
Land surface temperature for 2026-09-22, from NASA GIBS. This is the temperature of the ground seen from orbit, not the air, and it is never ranked against air readings. Cloud hides the ground, so gaps are unread rather than guessed.
View more on Google Maps- 1
Washington/Dulles Intl has dropped below freezing on 6470 nights since 1960. The desert remembers every one of them.
From our dataNights with a minimum below 0°C since 1960. - 2
Today is colder than 64% of all days recorded here since 1960.
From our dataToday's high against every day recorded at this station since 1960. - 3
Right now Davis Lgb 46 Aws is 84.2°C colder than Washington/Dulles Intl. Same planet. Same afternoon.
From our dataBoth readings are live and ranked on this site now. - 4
The coldest night Washington/Dulles Intl has ever recorded, −27.8°C, would pass for a warm spell at Davis Lgb 46 Aws, which is −69.2°C right now.
From our dataThis station's record low against the current live reading at Davis Lgb 46 Aws.
New facts every day. Report an error.
Every year on record
1960 to 2026
Annual average · °C
Trend over 64 years with data: +0.29 °C per decade
Source: NOAA GHCN-Daily. Years the station did not cover are left as gaps, never joined across. The dashed line is a least squares trend through the years that have data.
Records by month
Jan
26.1°
−27.8°
Feb
26.7°
−25.6°
Mar
31.7°
−18.3°
Apr
33.9°
−8.3°
May
36.1°
−2.2°
Jun
38.9°
2.2°
Jul
40.6°
5.0°
Aug
40.0°
3.3°
Sep
37.8°
Recent days
| Day | High | At | Low | At |
|---|---|---|---|---|
| 2026-09-23 | 15.0°C | 00:52 UTC | 13.9°C | 06:52 UTC |
| 2026-09-22 | 15.6°C | 17:41 UTC | 15.0°C | 14:54 UTC |
Nearby stations
Data sources for this page
| Figure | Source | Type |
|---|---|---|
| Right now, today so far | NOAA Aviation Weather Center (METAR) and NOAA NWS WMO bulletins (SYNOP) | Measured, station |
| All-time, monthly and on-this-day records | NOAA NCEI Global Historical Climatology Network daily (GHCN-Daily), 1960 to 2026 | Measured, station |
| Nearby stations and distances | Computed from station positions in our own database | Calculated |