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

Weather in Lake Koshkonong, Wisconsin

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

Lake Koshkonong, WI
Sunday, May 17 at 4:10 AM
69
°
Overcast
Feels like
71°
Humidity
71%
Wind
3 mph
Sunrise
5:31 AM
Sunset
8:13 PM
Lake Koshkonong, WI
Hour by hour · 24h
58°
11p
58°
12a
56°
1a
55°
23%
2a
57°
20%
3a
56°
21%
4a
56°
12%
5a
56°
11%
6a
58°
7a
61°
8a
63°
9a
66°
10a
68°
11a
72°
12p
74°
1p
77°
2p
78°
3p
80°
4p
80°
5p
80°
6p
78°
7p
75°
8p
72°
9p
69°
10p
L 55°H 80°
Lake Koshkonong, WI
7-day forecast
  1. Today
    May 16
    Heavy Drizzle
    92%
    83°60°
  2. Sunday
    May 17
    Thunderstorm
    53%
    79°55°
  3. Monday
    May 18
    Thunderstorm
    70%
    77°63°
  4. Tuesday
    May 19
    Light Showers
    63%
    71°51°
  5. Wednesday
    May 20
    Overcast
    58°41°
  6. Thursday
    May 21
    Overcast
    62°37°
  7. Friday
    May 22
    Overcast
    11%
    66°45°
Lake Koshkonong, WI
Anemometer · 24h winds · from true
NESW
From · True
SSW
212° · veering 29°
Direction
SSW
212°
Sustained
3
mph
Gust
6
mph
Peak 24h
22
avg 7
Beaufort · 1 · LIGHT AIR
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 22 @ 7:00a
−24h−18h−12h−6hnow
A whisper of wind — leaves barely shift on the trees.
Lake Koshkonong, WI
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
983.4
-1.4 mb in 3h · falling · 29.04 inHg
Now
983.4
mb
3h
-1.4
mb
12h
+0.3
mb
24h
+3.2
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 980985
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Lake Koshkonong, WI
Air quality
45
AQI
Good
PM 2.5
9.1 μg/m³
PM 10
10.3 μg/m³
NO₂
25.4 μg/m³
Ozone
55.0 μg/m³
UV Index
0.0 Low
Lake Koshkonong, WI
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:00 AM
Sunrise
5:31 AM
Daylight
14h 42m
Sunset
8:13 PM
Civil dusk
1:46 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Lake Koshkonong, WI
The moon
New Moon
0% illuminated
Moonrise
10:34 AM
Moonset
1:46 AM
In sign
♊︎ Gemini
Lake Koshkonong, 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 →

Lake Koshkonong at a glance

  • Today vs. normal: 69°F — typical for the season
  • Last frost: May 3 (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 Lake Koshkonong

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.