Ashburn climate

Ashburn Weather in May

NOAA 1991-2020 normals for Ashburn 3 Ene, 2.9 km from Ashburn

Average highs run from 82°F on May 1 to 88°F on May 31, and lows from 57°F to 66°F.

May day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Ashburn, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
85°F
Average low
61°F
Record high
100°FMay 21, 1893
Record low
36°FMay 6, 1963
Chance of a freeze
0%
Days of 90°F or more
7.0
Daylight
13 h 26 min to 14 h 05 min
Cloud cover
49%
Humidity
71%
Dew point
62°F
Wind
7.8 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
May 182°F57°F95°F 190643°F 19630%
May 282°F57°F98°F 190347°F 19880%
May 382°F57°F95°F 199044°F 20260%
May 482°F58°F93°F 195140°F 19710%
May 583°F58°F94°F 195943°F 20110%
May 683°F58°F95°F 202236°F 19630%
May 783°F59°F94°F 195239°F 19630%
May 883°F59°F95°F 195944°F 20210%
May 984°F59°F95°F 196245°F 19840%
May 1084°F60°F94°F 195541°F 19060%
May 1184°F60°F96°F 195543°F 19060%
May 1284°F60°F96°F 195543°F 19690%
May 1385°F61°F97°F 197041°F 19960%
May 1485°F61°F96°F 198548°F 19410%
May 1585°F61°F96°F 198548°F 20210%
May 1685°F62°F97°F 199544°F 19040%
May 1786°F62°F96°F 199545°F 19560%
May 1886°F62°F97°F 196240°F 20110%
May 1986°F63°F98°F 196244°F 18930%
May 2086°F63°F98°F 196242°F 19630%
May 2186°F63°F100°F 189347°F 19540%
May 2287°F63°F100°F 196246°F 19540%
May 2387°F64°F100°F 194148°F 19630%
May 2487°F64°F98°F 190342°F 18920%
May 2587°F64°F99°F 190349°F 19790%
May 2687°F65°F99°F 190342°F 19790%
May 2788°F65°F99°F 190347°F 19610%
May 2888°F65°F100°F 200647°F 19610%
May 2988°F66°F98°F 196253°F 19060%
May 3088°F66°F100°F 189247°F 19840%
May 3188°F66°F100°F 189247°F 19840%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Ashburn, in percent, and of at least 0.1 inch of snowfall.00.21102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

May 1
sunrise 6:49 AM, sunset 8:15 PM
May 31
sunrise 6:30 AM, sunset 8:35 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00090406 (Ashburn 3 Ene), public domain. Records: NOAA GHCN-Daily, station USC00092266, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.