Weather in Williamstown, Pennsylvania
Roses open along the stoops. Day 59 of spring. Read this microseason across nine climate regions →
Williamstown, PA
Sunday, May 17 at 5:07 AM
67
°
Overcast
Feels like
66°
Humidity
77%
Wind
10 mph
Sunrise
5:47 AM
Sunset
8:18 PM
Williamstown, PA
Hour by hour · 24h
48°
1a
49°
2a
48°
3a
48°
4a
47°
5a
47°
6a
48°
7a
49°
8a
51°
9a
53°
10a
56°
11a
59°
12p
60°
1p
62°
2p
63°
3p
66°
4p
67°
5p
68°
6p
66°
7p
63°
8p
60°
9p
59°
10p
57°
11p
57°
12a
Williamstown, PA
7-day forecast
- TodayMay 17Overcast15%85°62°
- MondayMay 18Light Drizzle—91°64°
- TuesdayMay 19Light Drizzle11%89°61°
- WednesdayMay 20Light Showers79%82°54°
- ThursdayMay 21Overcast12%67°43°
- FridayMay 22Drizzle34%53°45°
- SaturdayMay 23Drizzle39%54°46°
Williamstown, PA
Next 24 hours · Cold now
Williamstown, PA
Anemometer · 24h winds · from true
From · True
W
269° · veering 58°
Direction
W
269°
Sustained
10
mph
Gust
26
mph
Peak 24h
26
avg 7
Beaufort · 3 · GENTLE 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
Williamstown, PA
Air quality
44
AQI
Good
- PM 2.5
- 5.7 μg/m³
- PM 10
- 5.9 μg/m³
- NO₂
- 6.4 μg/m³
- Ozone
- 65.0 μg/m³
- UV Index
- 0.0 Low
Williamstown, PA
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
9:18 AM
Sunrise
5:47 AM
Daylight
14h 31m
Sunset
8:18 PM
Civil dusk
12:50 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Williamstown, PA
The moon
New Moon
0% illuminated
- Moonrise
- 9:52 AM
- Moonset
- 12:45 AM
- In sign
- ♊︎ Gemini
Williamstown, PA
Microseason · 28 of 72
May 16–20
Roses open along the stoops
plant
Williamstown at a glance
- Today vs. normal: 4°F below the seasonal normal for this latitude
- Last frost: April 19 (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.