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

Weather in Algonquin, Illinois

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

Algonquin, IL
Sunday, May 17 at 2:35 AM
72
°
Partly Cloudy
Feels like
74°
Humidity
71%
Wind
5 mph
Sunrise
5:30 AM
Sunset
8:08 PM
Algonquin, IL
Hour by hour · 24h
57°
9p
55°
10p
54°
11p
55°
12a
52°
1a
52°
11%
2a
53°
19%
3a
52°
4a
52°
5a
55°
6a
57°
7a
58°
8a
59°
9a
61°
10a
64°
11a
67°
12p
69°
1p
71°
2p
73°
3p
74°
4p
74°
5p
74°
6p
73°
7p
69°
8p
L 52°H 74°
Algonquin, IL
7-day forecast
  1. Today
    May 16
    Rain
    53%
    82°61°
  2. Sunday
    May 17
    Drizzle
    24%
    85°64°
  3. Monday
    May 18
    Rain
    68%
    78°67°
  4. Tuesday
    May 19
    Showers
    57%
    72°53°
  5. Wednesday
    May 20
    Overcast
    13%
    59°42°
  6. Thursday
    May 21
    Overcast
    62°40°
  7. Friday
    May 22
    Overcast
    63°47°
Algonquin, IL
Anemometer · 24h winds · from true
NESW
From · True
SSE
165° · backing 68°
Direction
SSE
165°
Sustained
5
mph
Gust
11
mph
Peak 24h
19
avg 7
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 7 · pk 19 @ 1:00a
−24h−18h−12h−6hnow
Light breeze backing 68° from the sse.
Algonquin, IL
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
979.5
-1.3 mb in 3h · falling · 28.92 inHg
Now
979.5
mb
3h
-1.3
mb
12h
-1.1
mb
24h
+3.4
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 975981
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Algonquin, IL
Air quality
64
AQI
Moderate
PM 2.5
4.5 μg/m³
PM 10
5.4 μg/m³
NO₂
6.4 μg/m³
Ozone
91.0 μg/m³
UV Index
0.0 Low
Algonquin, 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 38m
Sunset
8:08 PM
Civil dusk
1:41 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Algonquin, IL
The moon
New Moon
0% illuminated
Moonrise
10:34 AM
Moonset
1:40 AM
In sign
♊︎ Gemini
Algonquin, 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 →

Algonquin at a glance

  • Today vs. normal: 3°F above the seasonal normal for this latitude
  • Last frost: April 29 (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

Cool-season window is open

As of May 17, the cool-season window is open or about to open. Direct-sow peas, lettuce, spinach, radishes, and brassicas now. Hold off on warm-season crops until 1–2 weeks after the last spring frost (around May).

ZIP codes in Algonquin

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.