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 2:40 AM
72
°
Overcast
Feels like
71°
Humidity
56%
Wind
4 mph
Sunrise
5:30 AM
Sunset
8:10 PM
Delavan, WI
Hour by hour · 24h
57°
9p
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
L 51°H 78°
Delavan, WI
7-day forecast
  1. Today
    May 16
    Heavy Drizzle
    65%
    83°58°
  2. Sunday
    May 17
    Light Rain
    47%
    84°56°
  3. Monday
    May 18
    Heavy Rain
    52%
    77°63°
  4. Tuesday
    May 19
    Showers
    59%
    72°51°
  5. Wednesday
    May 20
    Overcast
    58°40°
  6. Thursday
    May 21
    Overcast
    60°38°
  7. Friday
    May 22
    Overcast
    64°45°
Delavan, WI
Anemometer · 24h winds · from true
NESW
From · True
WSW
252° · backing 38°
Direction
WSW
252°
Sustained
4
mph
Gust
8
mph
Peak 24h
16
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 16 @ 3:00a
−24h−18h−12h−6hnow
Light breeze backing 38° from the wsw.
Delavan, WI
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
976.8
-0.3 mb in 3h · steady · 28.84 inHg
Now
976.8
mb
3h
-0.3
mb
12h
-1.5
mb
24h
+2.9
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 974978
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Delavan, WI
Air quality
52
AQI
Moderate
PM 2.5
7.6 μg/m³
PM 10
9.0 μg/m³
NO₂
16.6 μg/m³
Ozone
75.0 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: 3°F above the seasonal normal for this latitude
  • 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.