Weather in Great Falls, Virginia
Roses open along the stoops. Day 59 of spring. Read this microseason across nine climate regions →
Great Falls, VA
Sunday, May 17 at 4:54 AM
67
°
Clear
Feels like
68°
Humidity
74%
Wind
5 mph
Sunrise
5:54 AM
Sunset
8:16 PM
Great Falls, VA
Hour by hour · 24h
53°
12a
53°
1a
53°
2a
52°
3a
53°
4a
53°
5a
53°
6a
53°
7a
54°
8a
57°
9a
59°
10a
61°
11a
63°
12p
66°
1p
68°
2p
69°
3p
71°
4p
72°
5p
71°
6p
70°
7p
67°
8p
63°
9p
59°
10p
57°
11p
Great Falls, VA
7-day forecast
- TodayMay 17Overcast20%89°62°
- MondayMay 18Light Showers11%97°64°
- TuesdayMay 19Overcast—93°63°
- WednesdayMay 20Light Showers78%92°64°
- ThursdayMay 21Light Drizzle39%61°54°
- FridayMay 22Drizzle58%57°49°
- SaturdayMay 23Light Drizzle41%68°51°
Great Falls, VA
Next 24 hours · Cool now
Great Falls, VA
Anemometer · 24h winds · from true
From · True
W
275° · veering 174°
Direction
W
275°
Sustained
5
mph
Gust
10
mph
Peak 24h
18
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
−24h−18h−12h−6hnow
Great Falls, VA
Air quality
52
AQI
Moderate
- PM 2.5
- 8.9 μg/m³
- PM 10
- 9.2 μg/m³
- NO₂
- 9.7 μg/m³
- Ozone
- 68.0 μg/m³
- UV Index
- 0.0 Low
Great Falls, VA
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
9:26 AM
Sunrise
5:54 AM
Daylight
14h 22m
Sunset
8:16 PM
Civil dusk
12:47 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Great Falls, VA
The moon
New Moon
0% illuminated
- Moonrise
- 10:00 AM
- Moonset
- 12:42 AM
- In sign
- ♊︎ Gemini
Great Falls, VA
Microseason · 28 of 72
May 16–20
Roses open along the stoops
plant
Great Falls at a glance
- Today vs. normal: 6°F below the seasonal normal for this latitude
- Last frost: April 10 (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.