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

Weather in Heritage Lake, Illinois

Roses open on the Piedmont edge. Day 59 of spring. Read this microseason across nine climate regions →

Heritage Lake, IL
Sunday, May 17 at 5:14 AM
67
°
Overcast
Feels like
66°
Humidity
86%
Wind
12 mph
Sunrise
5:38 AM
Sunset
8:09 PM
Heritage Lake, IL
Hour by hour · 24h
59°
12a
58°
1a
58°
2a
58°
3a
58°
12%
4a
54°
60%
5a
53°
89%
6a
52°
49%
7a
53°
23%
8a
54°
9a
56°
10a
62°
11a
65°
12p
67°
1p
71°
2p
74°
3p
75°
4p
76°
5p
76°
6p
74°
7p
72°
8p
70°
9p
69°
10p
69°
11p
L 52°H 76°
Heritage Lake, IL
7-day forecast
  1. Today
    May 17
    Overcast
    25%
    85°65°
  2. Monday
    May 18
    Rain
    65%
    78°67°
  3. Tuesday
    May 19
    Light Showers
    74%
    76°57°
  4. Wednesday
    May 20
    Overcast
    27%
    65°47°
  5. Thursday
    May 21
    Overcast
    65°46°
  6. Friday
    May 22
    Overcast
    11%
    60°53°
  7. Saturday
    May 23
    Drizzle
    13%
    76°58°
Heritage Lake, IL
Anemometer · 24h winds · from true
NESW
From · True
SE
143° · veering 145°
Direction
SE
143°
Sustained
12
mph
Gust
24
mph
Peak 24h
28
avg 10
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 10 · pk 28 @ 11:00a
−24h−18h−12h−6hnow
Light breeze veering 145° from the se.
Heritage Lake, IL
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
987.5
-1.3 mb in 3h · falling · 29.16 inHg
Now
987.5
mb
3h
-1.3
mb
12h
-0.1
mb
24h
-0.8
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 987990
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Heritage Lake, IL
Air quality
41
AQI
Good
PM 2.5
5.8 μg/m³
PM 10
6.3 μg/m³
NO₂
8.2 μg/m³
Ozone
61.0 μg/m³
UV Index
0.0 Low
Heritage Lake, IL
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:10 AM
Sunrise
5:38 AM
Daylight
14h 31m
Sunset
8:09 PM
Civil dusk
1:40 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Heritage Lake, IL
The moon
New Moon
0% illuminated
Moonrise
10:45 AM
Moonset
1:38 AM
In sign
♊︎ Gemini
Heritage Lake, IL
Microseason · 28 of 72
May 16–20

Roses open on the Piedmont edge

insect
Jan 137% of the yearDec 31

Read this microseason across nine climate regions →

Heritage Lake 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.

ZIP codes in Heritage Lake

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.