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

Weather in Allerton, Illinois

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

Allerton, IL
Sunday, May 17 at 5:00 AM
63
°
Clear
Feels like
64°
Humidity
92%
Wind
5 mph
Sunrise
5:34 AM
Sunset
8:01 PM
Allerton, IL
Hour by hour · 24h
52°
12a
52°
1a
54°
2a
54°
3a
54°
4a
54°
5a
54°
12%
6a
51°
67%
7a
50°
87%
8a
51°
63%
9a
54°
29%
10a
56°
11a
59°
12p
61°
1p
66°
2p
69°
3p
73°
4p
74°
5p
75°
6p
74°
7p
69°
8p
67°
9p
65°
10p
64°
11p
L 50°H 75°
Allerton, IL
7-day forecast
  1. Today
    May 17
    Overcast
    85°63°
  2. Monday
    May 18
    Heavy Rain
    65%
    82°68°
  3. Tuesday
    May 19
    Light Showers
    80%
    80°59°
  4. Wednesday
    May 20
    Overcast
    75%
    67°49°
  5. Thursday
    May 21
    Overcast
    67°46°
  6. Friday
    May 22
    Drizzle
    18%
    59°53°
  7. Saturday
    May 23
    Light Drizzle
    18%
    74°60°
Allerton, IL
Anemometer · 24h winds · from true
NESW
From · True
SE
142° · backing 57°
Direction
SE
142°
Sustained
5
mph
Gust
12
mph
Peak 24h
35
avg 10
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 10 · pk 35 @ 8:00p
−24h−18h−12h−6hnow
Light breeze backing 57° from the se.
Allerton, IL
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
987.3
-0.9 mb in 3h · falling · 29.15 inHg
Now
987.3
mb
3h
-0.9
mb
12h
+1.0
mb
24h
+1.0
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 986990
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Allerton, IL
Air quality
41
AQI
Good
PM 2.5
5.4 μg/m³
PM 10
5.9 μg/m³
NO₂
7.0 μg/m³
Ozone
66.0 μg/m³
UV Index
0.0 Low
Allerton, IL
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:06 AM
Sunrise
5:34 AM
Daylight
14h 27m
Sunset
8:01 PM
Civil dusk
1:32 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Allerton, IL
The moon
New Moon
0% illuminated
Moonrise
10:41 AM
Moonset
1:30 AM
In sign
♊︎ Gemini
Allerton, 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 →

Allerton at a glance

  • Today vs. normal: 9°F below the seasonal normal for this latitude
  • Last frost: April 15 (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 Allerton

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.