Citizen station GW2622GW2622
In a volunteer observer's own ground/9.6 mi away/941 ft/127 ft below here
temp, humidity, wind, precip, pressure
St. Charles, Iowa
City in Madison County, Iowa* WHAT...Sub-freezing temperatures as low as 30 possible. * WHERE...Much of Iowa. * WHEN...From late Friday night through Saturday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.
Take steps now to protect tender plants from the cold.
47°
52°/43°
Mostly clear·
Feels like 42°·Gentle breeze 12 mph NW
Alert. A Freeze Watch is in force for St. Charles until 9 AM tomorrow. Read the alert in full, and see what it means in the Field Book.
Now. St. Charles is 47° and mostly clear at 1 AM. With the wind it feels like 42°. The dew point is 39°, so the air feels dry and comfortable. Gentle breeze from the northwest at 12 mph, gusting to 22 mph.
Today and tonight. It warms to about 50° by 2 PM. Tonight falls to about 32° by 7 AM, under a mostly clear sky. A freeze: protect plants and pipes. No rain is expected for the rest of the day.
The week. The warmest day ahead is Wednesday, near 75°, and the coolest tomorrow, near 58°. The days ahead look dry. The first freeze could come tomorrow, a low of 32°.
The sky tonight. The sun sets at 6:33 PM. The Moon is a waxing crescent, 33% lit, and sets at 10:26 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 6 minutes long, 3 minutes shorter than yesterday.
0UV Low
16Air quality
74%Humidity
22%Cloud
Now
1:00 AM
47feels42
now, mostly clear
Today
Oct 16
5243
21mph
Sat
Oct 17
5832
clear day
Sun
Oct 18
6540
13mph
Mon
Oct 19
6745
overcast
Tue
Oct 20
7147
overcast
Wed
Oct 21
7552
overcast
Thu
Oct 22
7557
13%
47°
52°43°
58°32°
65°40°
67°45°
71°47°
75°52°
75°57°
As of 1:00 AM in St. Charles, Iowa.
Air quality
The air at St. Charles
Index 16, good, led by ozone. Read at 12 AM from its reporting area, Des Moines (IA), 19 miles off.
16Good
- Fine particles (PM2.5)15Good-
- Ozone16Good19 ppb23.3 mi
The days ahead
Good each day through Sat Oct 17, led by fine particles. Yesterday measured 20, good.
GoodModerate
- 20YesterdayOct 15
- GoodTodayOct 16
- GoodSatOct 17
Smoke, the next 43 hours
No smoke near the ground through Sat 7 PM.
Precipitation
What has fallen at St. Charles
0.63 in in the last 24 hours, 0.67 in over the last 3 days, to Fri 12 AM. Measured by radar and rain gauges, as water.
- Last 24 hours
- 0.63in
- Last 3 days
- 0.67in
3 days agoLast 24 hours 94%
Visibility
How far you can see at St. Charles, the next 43 hours
Visibility stays 7 miles or more through Sat 7 PM, lowest 8 miles Sat 3 AM.
F
Now, today, and the week
On the radar over St. Charles, IowaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture
Weather instrument stations by state
What is measuring near here
The 7 instruments nearest St. Charles, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.0 miles away.
measured now5 instruments
Rank1,046of 1,060
Des Moines (I-35)RDSI4
Beside a road/16.3 mi away/735 ft/333 ft below here
temp, pavement temp, wind, visibility, precip
OsceolaI75
At an airfield/17.9 mi away/1,110 ft/42 ft above here
temp, wind, gust, visibility, precip, pressure
Lucas 2SSW - Stephens State Forest RAWSSSFI4
A remote fire weather station/26.7 mi away/1,063 ft/5 ft below here
temp, wind, gust, humidity, pressure
Des Moines 17 E54902
At a climate reference station/32.8 mi away/903 ft/165 ft below here
temp, humidity, wind, solar, precip
measured daily2 instruments
St Charles 1.1 NWIA-MD-6
In a volunteer observer's own ground/1.0 mi away/1,054 ft/14 ft below here
precip, snowfall, snow depth
Winterset 2 NNWWTRI4
At a cooperative observer's station/12.3 mi away/1,093 ft/25 ft above here
snowfall, snow depth, precip, high, low
Station report
The weather at Osceola, drawn
The nearest airport reporting now, 17.9 mi from St. Charles, Iowa. From its report of Oct 16, 2026, 12:35 AM local time: 3 of its 3 sheets.
The column
At 1,110 ft above sea level, 4 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 28.74 inHg and the temperature at 55.0 F.
The sun
On Oct 16 the noon sun stands 40 degrees above the horizon at 41.05 N, and the day is 10 h 56 min long. Level ground there takes 64 per cent of the noon sunlight a surface facing the sun would.
The instrument
An airport station, 1,110 ft above sea level. Its report of Oct 16, 2026, 12:35 AM local time is written on the sensors that made it.
The full report of Osceola, in 3 sheets, each beside the Field Book plates that explain it
What the snow tracker reads here
Every instrument in this state
-
Snow on the ground
Elsewhere in Iowa
15 places, each with its own forecast and its own instruments.
Near St. Charles
The nearest places, each with its own forecast and the instruments nearest it.
- St. Maryscity, 4 mi
- Bevingtoncity, 5 mi
- Pattersoncity, 6 mi
- Trurocity, 6 mi
- Martensdalecity, 7 mi
- East Perucity, 7 mi
- New Virginiacity, 8 mi
- Wintersetcity, 11 mi
- Spring Hillcity, 12 mi
- Indianolacity, 14 mi
- Cummingcity, 14 mi
- Norwalkcity, 15 mi