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

Weather in Chester, Maryland

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

Chester, MD
Sunday, May 17 at 1:39 AM
70
°
Overcast
Feels like
65°
Humidity
50%
Wind
11 mph
Sunrise
5:51 AM
Sunset
8:11 PM
Chester, MD
Hour by hour · 24h
54°
9p
53°
10p
52°
11p
52°
12a
52°
1a
51°
2a
51°
3a
52°
4a
52°
5a
52°
6a
52°
7a
53°
8a
55°
9a
57°
10a
59°
11a
61°
12p
64°
1p
66°
2p
68°
3p
69°
4p
69°
5p
69°
6p
68°
7p
65°
8p
L 51°H 69°
Chester, MD
7-day forecast
  1. Today
    May 16
    Overcast
    12%
    82°52°
  2. Sunday
    May 17
    Overcast
    15%
    88°61°
  3. Monday
    May 18
    Light Drizzle
    13%
    80°64°
  4. Tuesday
    May 19
    Overcast
    78°65°
  5. Wednesday
    May 20
    Drizzle
    52%
    78°66°
  6. Thursday
    May 21
    Light Drizzle
    52%
    66°58°
  7. Friday
    May 22
    Drizzle
    50%
    60°53°
Chester, MD
Anemometer · 24h winds · from true
NESW
From · True
S
171° · backing 45°
Direction
S
171°
Sustained
11
mph
Gust
18
mph
Peak 24h
22
avg 9
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
avg 9 · pk 22 @ 5:00p
−24h−18h−12h−6hnow
Light breeze backing 45° from the s.
Chester, MD
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1013.1
-0.3 mb in 3h · falling · 29.92 inHg
Now
1013.1
mb
3h
-0.3
mb
12h
-2.5
mb
24h
-2.7
mb
Regime · CHANGE
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 10111018
−24h−18h−12h−6hnow
Air sits at the threshold — small shifts decide the day.
Chester, MD
Air quality
104
AQI
Unhealthy for sensitive
PM 2.5
9.9 μg/m³
PM 10
10.3 μg/m³
NO₂
5.2 μg/m³
Ozone
123.0 μg/m³
UV Index
0.0 Low
Chester, MD
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
9:22 AM
Sunrise
5:51 AM
Daylight
14h 20m
Sunset
8:11 PM
Civil dusk
12:42 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Chester, MD
The moon
New Moon
0% illuminated
Moonrise
9:56 AM
Moonset
12:37 AM
In sign
♉︎ Taurus
Chester, MD
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 →

Chester at a glance

  • Today vs. normal: 3°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.

ZIP codes in Chester

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.