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

Weather in Marengo, Illinois

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

Marengo, IL
Sunday, May 17 at 2:38 AM
72
°
Overcast
Feels like
73°
Humidity
69%
Wind
5 mph
Sunrise
5:32 AM
Sunset
8:09 PM
Marengo, IL
Hour by hour · 24h
58°
9p
57°
10p
57°
11p
55°
12a
53°
1a
52°
24%
2a
52°
12%
3a
51°
4a
52°
5a
54°
6a
55°
7a
57°
8a
61°
9a
62°
10a
65°
11a
69°
12p
70°
1p
72°
2p
74°
3p
76°
4p
76°
5p
74°
6p
73°
7p
70°
8p
L 51°H 76°
Marengo, IL
7-day forecast
  1. Today
    May 16
    Light Rain
    60%
    82°59°
  2. Sunday
    May 17
    Rain
    35%
    84°64°
  3. Monday
    May 18
    Drizzle
    70%
    78°67°
  4. Tuesday
    May 19
    Showers
    59%
    71°52°
  5. Wednesday
    May 20
    Overcast
    59°42°
  6. Thursday
    May 21
    Overcast
    62°40°
  7. Friday
    May 22
    Overcast
    66°46°
Marengo, IL
Anemometer · 24h winds · from true
NESW
From · True
SSW
197° · backing 31°
Direction
SSW
197°
Sustained
5
mph
Gust
9
mph
Peak 24h
19
avg 8
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 8 · pk 19 @ 9:00a
−24h−18h−12h−6hnow
Light breeze backing 31° from the ssw.
Marengo, IL
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
978.4
-0.7 mb in 3h · steady · 28.89 inHg
Now
978.4
mb
3h
-0.7
mb
12h
-1.6
mb
24h
+2.5
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 975980
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Marengo, IL
Air quality
68
AQI
Moderate
PM 2.5
6.5 μg/m³
PM 10
7.7 μg/m³
NO₂
8.4 μg/m³
Ozone
91.0 μg/m³
UV Index
0.0 Low
Marengo, IL
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:01 AM
Sunrise
5:32 AM
Daylight
14h 37m
Sunset
8:09 PM
Civil dusk
1:42 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Marengo, IL
The moon
New Moon
0% illuminated
Moonrise
10:35 AM
Moonset
1:42 AM
In sign
♊︎ Gemini
Marengo, 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 →

Marengo 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 Marengo

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.