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

Weather in Penn, Pennsylvania

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

Penn, PA
Sunday, May 17 at 3:57 AM
63
°
Partly Cloudy
Feels like
63°
Humidity
90%
Wind
6 mph
Sunrise
6:01 AM
Sunset
8:28 PM
Penn, PA
Hour by hour · 24h
48°
11p
50°
12a
49°
1a
47°
2a
46°
3a
45°
4a
43°
5a
42°
6a
43°
7a
46°
8a
51°
9a
54°
10a
57°
11a
60°
12p
62°
1p
64°
2p
65°
3p
66°
4p
67°
5p
66°
6p
65°
7p
62°
8p
59°
9p
57°
10p
L 42°H 67°
Penn, PA
7-day forecast
  1. Today
    May 16
    Light Drizzle
    39%
    74°46°
  2. Sunday
    May 17
    Overcast
    19%
    83°58°
  3. Monday
    May 18
    Overcast
    90°64°
  4. Tuesday
    May 19
    Light Showers
    18%
    85°60°
  5. Wednesday
    May 20
    Drizzle
    76%
    71°46°
  6. Thursday
    May 21
    Overcast
    14%
    68°39°
  7. Friday
    May 22
    Drizzle
    41%
    57°50°
Penn, PA
Anemometer · 24h winds · from true
NESW
From · True
SSW
197° · veering 40°
Direction
SSW
197°
Sustained
6
mph
Gust
12
mph
Peak 24h
23
avg 8
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 8 · pk 23 @ 3:00p
−24h−18h−12h−6hnow
Light breeze veering 40° from the ssw.
Penn, PA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
978.8
-0.1 mb in 3h · rising · 28.90 inHg
Now
978.8
mb
3h
-0.1
mb
12h
-0.7
mb
24h
-0.5
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 978980
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Penn, PA
Air quality
44
AQI
Good
PM 2.5
5.1 μg/m³
PM 10
5.3 μg/m³
NO₂
7.7 μg/m³
Ozone
70.0 μg/m³
UV Index
0.0 Low
Penn, PA
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
9:32 AM
Sunrise
6:01 AM
Daylight
14h 27m
Sunset
8:28 PM
Civil dusk
1:00 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Penn, PA
The moon
New Moon
0% illuminated
Moonrise
10:05 AM
Moonset
12:57 AM
In sign
♊︎ Gemini
Penn, PA
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 →

Penn at a glance

  • Today vs. normal: 8°F below the seasonal normal for this latitude
  • Last frost: April 18 (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 Penn

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.