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

Weather in Flossmoor, Illinois

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

Flossmoor, IL
Sunday, May 17 at 2:36 AM
71
°
Clear
Feels like
71°
Humidity
63%
Wind
7 mph
Sunrise
5:30 AM
Sunset
8:04 PM
Flossmoor, IL
Hour by hour · 24h
58°
9p
55°
10p
56°
11p
55°
12a
54°
1a
53°
2a
55°
13%
3a
55°
13%
4a
55°
5a
56°
6a
59°
13%
7a
60°
14%
8a
60°
9a
59°
10a
60°
11a
61°
12p
66°
1p
69°
2p
71°
3p
73°
4p
75°
5p
74°
6p
72°
7p
70°
8p
L 53°H 75°
Flossmoor, IL
7-day forecast
  1. Today
    May 16
    Light Rain
    49%
    83°64°
  2. Sunday
    May 17
    Overcast
    18%
    87°63°
  3. Monday
    May 18
    Rain
    62%
    83°69°
  4. Tuesday
    May 19
    Light Showers
    73%
    79°60°
  5. Wednesday
    May 20
    Overcast
    49%
    60°48°
  6. Thursday
    May 21
    Overcast
    66°48°
  7. Friday
    May 22
    Overcast
    10%
    57°54°
Flossmoor, IL
Anemometer · 24h winds · from true
NESW
From · True
S
178° · backing 19°
Direction
S
178°
Sustained
7
mph
Gust
16
mph
Peak 24h
30
avg 9
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 9 · pk 30 @ 3:00a
−24h−18h−12h−6hnow
Light breeze backing 19° from the s.
Flossmoor, IL
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
987.6
-1.0 mb in 3h · falling · 29.16 inHg
Now
987.6
mb
3h
-1.0
mb
12h
-0.4
mb
24h
+3.5
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 982989
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Flossmoor, IL
Air quality
65
AQI
Moderate
PM 2.5
5.3 μg/m³
PM 10
6.2 μg/m³
NO₂
11.1 μg/m³
Ozone
90.0 μg/m³
UV Index
0.0 Low
Flossmoor, IL
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:00 AM
Sunrise
5:30 AM
Daylight
14h 34m
Sunset
8:04 PM
Civil dusk
1:36 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Flossmoor, IL
The moon
New Moon
0% illuminated
Moonrise
10:34 AM
Moonset
1:35 AM
In sign
♊︎ Gemini
Flossmoor, IL
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 →

Flossmoor at a glance

  • Today vs. normal: 71°F — typical for the season
  • Last frost: April 25 (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 Flossmoor

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.