Weather StoryAlmanac, microseasons, and the day's weather story.

Weather in Fairfax, Virginia

Roses open along the stoops. Day 59 of spring. Read this microseason across nine climate regions →

Fairfax, VA
Sunday, May 17 at 2:47 AM
71
°
Clear
Feels like
71°
Humidity
58%
Wind
4 mph
Sunrise
5:55 AM
Sunset
8:15 PM
Fairfax, VA
Hour by hour · 24h
54°
10p
53°
11p
52°
12a
52°
1a
51°
2a
51°
3a
52°
4a
51°
5a
52°
6a
53°
7a
54°
8a
57°
9a
59°
10a
62°
11a
64°
12p
67°
1p
68°
2p
70°
3p
71°
4p
72°
5p
72°
6p
71°
7p
68°
8p
63°
9p
L 51°H 72°
Fairfax, VA
7-day forecast
  1. Today
    May 16
    Overcast
    26%
    84°48°
  2. Sunday
    May 17
    Thunderstorm
    27%
    86°63°
  3. Monday
    May 18
    Heavy Drizzle
    97°64°
  4. Tuesday
    May 19
    Overcast
    95°64°
  5. Wednesday
    May 20
    Showers
    65%
    94°67°
  6. Thursday
    May 21
    Drizzle
    51%
    64°54°
  7. Friday
    May 22
    Drizzle
    49%
    57°50°
Fairfax, VA
Anemometer · 24h winds · from true
NESW
From · True
W
267° · veering 21°
Direction
W
267°
Sustained
4
mph
Gust
7
mph
Peak 24h
20
avg 5
Beaufort · 2 · LIGHT BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 5 · pk 20 @ 6:00p
−24h−18h−12h−6hnow
A whisper of wind — leaves barely shift on the trees.
Fairfax, VA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1002.2
-0.1 mb in 3h · rising · 29.59 inHg
Now
1002.2
mb
3h
-0.1
mb
12h
-1.7
mb
24h
-2.4
mb
Regime · RAIN
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 10021007
−24h−18h−12h−6hnow
Damp, unsettled regime — wet weather lingers nearby.
Fairfax, VA
Air quality
82
AQI
Moderate
PM 2.5
12.0 μg/m³
PM 10
12.4 μg/m³
NO₂
11.4 μg/m³
Ozone
97.0 μg/m³
UV Index
0.0 Low
Fairfax, VA
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
9:27 AM
Sunrise
5:55 AM
Daylight
14h 20m
Sunset
8:15 PM
Civil dusk
12:46 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Fairfax, VA
The moon
New Moon
0% illuminated
Moonrise
10:00 AM
Moonset
12:41 AM
In sign
♊︎ Gemini
Fairfax, VA
Microseason · 28 of 72
May 16–20

Roses open along the stoops

plant
Jan 137% of the yearDec 31

Read this microseason across nine climate regions →

Fairfax at a glance

  • Today vs. normal: 71°F — typical for the season
  • Last frost: April 9 (climatological average for this latitude)
  • Microseason: 28 of 72, May 16–20
  • Planting window: Direct sow okra, melons, and southern peas. Thin carrot rows.

Right now in the garden

Warm-season window is open

As of May 17, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.

ZIP codes in Fairfax

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.