Harpers Ferry 5WSW - Yellow River Park RAWSYSPI4
A remote fire weather station/11.2 mi away/748 ft/463 ft below here
temp, wind, gust, humidity, pressure
Alert. A Freeze Watch is in force for Monona until 9 AM tomorrow. Read the alert in full, and see what it means in the Field Book.
Now. Monona is 47° and overcast at 12 AM. With the wind it feels like 43°. The dew point is 45°, so the air feels dry and comfortable. Gentle breeze from the west-northwest at 9 mph, gusting to 19 mph.
Today and tonight. It warms to about 50° by 3 PM. Tonight falls to about 30° by 7 AM, under a mostly clear sky. A freeze: protect plants and pipes.
The week. The warmest day ahead is Thursday, near 71°, and the coolest tomorrow, near 56°. The days ahead look dry. The first freeze could come tomorrow, a low of 28°.
The sky tonight. The sun sets at 6:21 PM. The Moon is a waxing crescent, 33% lit, and sets at 10:08 PM. The next full Moon is Sunday, Oct 25. After dark, look for Saturn, bright in the east-southeast. A planet shines with a steady light where the stars around it twinkle. The Orionids meteor shower is active, peaking around Oct 21: at its peak, up to about 20 meteors an hour can be seen from a dark site. The sky is forecast to stay clear: a good night to look up. The day is 11 hours 2 minutes long, 3 minutes shorter than yesterday.
As of 12:00 AM in Monona, Iowa.
Air quality
Index 17, good, led by fine particles. Read at 11 PM from its reporting area, Driftless Area South (WI), 52 miles off.
Good each day through Sat Oct 17, led by ozone. Yesterday measured 26, good.
No smoke near the ground through Sat 7 PM.
Precipitation
0.91 in in the last 24 hours, 0.97 in over the last 3 days, to Thu 11 PM. Measured by radar and rain gauges, as water.
Visibility
Visibility stays 5 miles or more through Sat 7 PM, lowest 5 miles Fri 9 AM.
F
Now, today, and the week
On the radar over Monona, IowaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture
The 6 instruments nearest Monona, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.2 miles away.
measured now4 instruments
Harpers Ferry 5WSW - Yellow River Park RAWSYSPI4
A remote fire weather station/11.2 mi away/748 ft/463 ft below here
temp, wind, gust, humidity, pressure
Decorah (IA 9)RDCI4
Beside a road/20.6 mi away/1,017 ft/194 ft below here
temp, pavement temp, wind, visibility, precip
DecorahDEH
At an airfield/23.6 mi away/1,157 ft/54 ft below here
temp, wind, gust, visibility, precip, pressure
Citizen station GW7645GW7645
In a volunteer observer's own ground/27.9 mi away/1,025 ft/186 ft below here
temp, humidity, wind, precip, pressure
measured daily2 instruments
Monona 0.2 WNWIA-CT-11
In a volunteer observer's own ground/0.2 mi away/1,191 ft/20 ft below here
precip, snowfall, snow depth
PostvillePSTI4
At a cooperative observer's station/8.9 mi away/1,148 ft/63 ft below here
snowfall, snow depth, precip, high, low
Station report
The nearest airport reporting now, 23.6 mi from Monona, Iowa. From its report of Oct 15, 2026, 11:55 PM local time: 3 of its 6 sheets.
Broken at 3,200 ft, overcast at 4,300 ft; the ceiling is 3,200 ft; visibility 10 mi or more.
48.2 F with a dew point of 44.6 F, 87 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 800 ft up; the lowest cloud reported is at 3,200 ft.
From the northwest (310 degrees) at 9 mph, gusting 22 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 28 mph.
The full report of Decorah, in 6 sheets, each beside the Field Book plates that explain it
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Snow on the ground
15 places, each with its own forecast and its own instruments.
The nearest places, each with its own forecast and the instruments nearest it.