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

Weather in Alvan, Illinois

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

Alvan, IL
Sunday, May 17 at 1:42 AM
67
°
Partly Cloudy
Feels like
68°
Humidity
84%
Wind
6 mph
Sunrise
5:33 AM
Sunset
8:00 PM
Alvan, IL
Hour by hour · 24h
62°
8p
58°
9p
54°
10p
53°
11p
52°
12a
51°
1a
51°
2a
51°
3a
51°
4a
53°
5a
53°
6a
52°
36%
7a
50°
76%
8a
51°
60%
9a
52°
23%
10a
55°
11a
58°
12p
62°
1p
64°
2p
67°
3p
70°
4p
71°
5p
70°
6p
69°
7p
L 50°H 71°
Alvan, IL
7-day forecast
  1. Today
    May 16
    Drizzle
    54%
    74°62°
  2. Sunday
    May 17
    Overcast
    16%
    84°61°
  3. Monday
    May 18
    Drizzle
    68%
    83°68°
  4. Tuesday
    May 19
    Showers
    79%
    80°59°
  5. Wednesday
    May 20
    Overcast
    78%
    65°47°
  6. Thursday
    May 21
    Overcast
    64°45°
  7. Friday
    May 22
    Light Drizzle
    15%
    58°52°
Alvan, IL
Anemometer · 24h winds · from true
NESW
From · True
S
182° · veering 12°
Direction
S
182°
Sustained
6
mph
Gust
13
mph
Peak 24h
35
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 35 @ 1:00p
−24h−18h−12h−6hnow
Light breeze veering 12° from the s.
Alvan, IL
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
989.4
-1.4 mb in 3h · falling · 29.22 inHg
Now
989.4
mb
3h
-1.4
mb
12h
-1.1
mb
24h
+3.2
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 986991
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Alvan, IL
Air quality
44
AQI
Good
PM 2.5
7.0 μg/m³
PM 10
8.0 μg/m³
NO₂
4.2 μg/m³
Ozone
84.0 μg/m³
UV Index
0.0 Low
Alvan, IL
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:03 AM
Sunrise
5:33 AM
Daylight
14h 27m
Sunset
8:00 PM
Civil dusk
1:32 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Alvan, IL
The moon
New Moon
0% illuminated
Moonrise
10:39 AM
Moonset
1:30 AM
In sign
♉︎ Taurus
Alvan, 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 →

Alvan at a glance

  • Today vs. normal: 4°F below the seasonal normal for this latitude
  • Last frost: April 18 (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 Alvan

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.