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

Weather in Delavan, Wisconsin

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

Delavan, WI
Sunday, May 17 at 3:57 AM
68
°
Overcast
Feels like
70°
Humidity
76%
Wind
5 mph
Sunrise
5:30 AM
Sunset
8:10 PM
Delavan, WI
Hour by hour · 24h
54°
10p
54°
11p
53°
12a
51°
1a
51°
22%
2a
51°
18%
3a
52°
10%
4a
53°
5a
54°
6a
55°
7a
58°
8a
61°
9a
63°
10a
67°
11a
69°
12p
72°
1p
74°
2p
75°
3p
77°
4p
78°
5p
77°
6p
75°
7p
71°
8p
69°
9p
L 51°H 78°
Delavan, WI
7-day forecast
  1. Today
    May 16
    Heavy Drizzle
    65%
    83°58°
  2. Sunday
    May 17
    Heavy Rain
    43%
    84°56°
  3. Monday
    May 18
    Heavy Rain
    63%
    77°63°
  4. Tuesday
    May 19
    Showers
    55%
    72°51°
  5. Wednesday
    May 20
    Overcast
    58°40°
  6. Thursday
    May 21
    Overcast
    60°38°
  7. Friday
    May 22
    Overcast
    11%
    64°45°
Delavan, WI
Anemometer · 24h winds · from true
NESW
From · True
S
177° · backing 10°
Direction
S
177°
Sustained
5
mph
Gust
11
mph
Peak 24h
17
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 17 @ 1:00a
−24h−18h−12h−6hnow
Light breeze backing 10° from the s.
Delavan, WI
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
977.3
-0.1 mb in 3h · rising · 28.86 inHg
Now
977.3
mb
3h
-0.1
mb
12h
-0.4
mb
24h
+3.7
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 974979
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Delavan, WI
Air quality
48
AQI
Good
PM 2.5
9.1 μg/m³
PM 10
10.4 μg/m³
NO₂
21.9 μg/m³
Ozone
64.0 μg/m³
UV Index
0.0 Low
Delavan, WI
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 40m
Sunset
8:10 PM
Civil dusk
1:44 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Delavan, WI
The moon
New Moon
0% illuminated
Moonrise
10:33 AM
Moonset
1:43 AM
In sign
♊︎ Gemini
Delavan, WI
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 →

Delavan at a glance

  • Today vs. normal: 68°F — typical for the season
  • Last frost: May 2 (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 Delavan

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.