I-80 @ Hennepin Canal M.P. 44SS0536
Beside a road/10.7 mi away/-/- ft from here
temp, pavement temp, wind, visibility, precip
Annawan, Illinois
Town in Henry County, Illinois* WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Portions of north central, northwest, and west central Illinois, southeast Iowa, and northeast Missouri. * WHEN...From 1 AM to 9 AM CDT Saturday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Take steps now to protect tender plants from the cold.
43°
56°/44°
Clear·
Feels like 38°·Gentle breeze 9 mph N
Alert. A Frost Advisory is in force for Annawan until 9 AM tomorrow. Read the alert in full, and see what it means in the Field Book.
Now. Annawan is 43° and clear at 11 PM. With the wind it feels like 38°. The dew point is 36°, so the air feels dry and comfortable. Gentle breeze from the north at 9 mph.
Today and tonight. Tonight falls to about 34° by 7 AM, under a mostly clear sky. Frost can form on the ground in sheltered spots. No rain is expected for the rest of the day.
The week. The warmest day ahead is Thursday, near 76°, and the coolest tomorrow, near 58°. The days ahead look dry. Frost is possible tomorrow morning, a low of 33°.
The sky now. The Moon is a waxing crescent, 35% lit, and stays below the horizon until dawn. The next full Moon is Sunday, Oct 25. Look for Saturn, bright in the south. 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
19Air quality
76%Humidity
0%Cloud
Now
11:00 PM
43feels38
now, clear
Today
Oct 16
5644
27%
18mph
Sat
Oct 17
5833
clear day
Sun
Oct 18
6438
12mph
Mon
Oct 19
6938
mostly clear day
Tue
Oct 20
7243
overcast
Wed
Oct 21
7346
overcast
Thu
Oct 22
7650
overcast
43°
56°44°
58°33°
64°38°
69°38°
72°43°
73°46°
76°50°
As of 11:00 PM in Annawan, Illinois.
Air quality
The air at Annawan
Index 19, good, led by ozone. Read at 11 PM from its reporting area, Rock Island-Moline (IL), 27 miles off.
19Good
- Fine particles (PM2.5)9Good-
- Ozone19Good-
The days ahead
Good each day through Mon Oct 19, led by fine particles. Yesterday measured 19, good.
GoodModerate
- 19YesterdayOct 15
- GoodTodayOct 16
- GoodSatOct 17
- GoodSunOct 18
- GoodMonOct 19
Smoke, the next 45 hours
No smoke near the ground through Sun 7 PM.
Precipitation
What has fallen at Annawan
0.02 in in the last 24 hours, 0.68 in over the last 3 days, to Fri 10 PM. Measured by radar and rain gauges, as water.
- Last 24 hours
- 0.02in
- Last 3 days
- 0.68in
3 days agoLast 24 hours 3%
Visibility
How far you can see at Annawan, the next 45 hours
Visibility stays 8 miles or more through Sun 7 PM, lowest 8 miles Sat 8 AM.
F
Now, today, and the week
On the radar over Annawan, IllinoisReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture
Weather instrument stations by state
What is measuring near here
The 6 instruments nearest Annawan, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 5.7 miles away.
measured now4 instruments
Rank1,039of 1,419
At an airfield/26.7 mi away/646 ft/13 ft above here
temp, wind, gust, visibility, precip, pressure
Citizen station DW4895DW4895
In a volunteer observer's own ground/31.7 mi away/698 ft/65 ft above here
temp, humidity, wind, precip, pressure
Mississippi River AT Rock Island LD15RCKI2
At a river or reservoir gauge/35.1 mi away/552 ft/81 ft below here
temp, wind, gust, humidity, pressure
measured daily2 instruments
Atkinson 2.6 NNEIL-HY-4
In a volunteer observer's own ground/5.7 mi away/614 ft/19 ft below here
precip, snowfall, snow depth
KewaneeKEWI2
At a cooperative observer's station/10.2 mi away/794 ft/161 ft above here
snowfall, snow depth, precip, high, low
Station report
The weather at Sterling Rockfal, drawn
The nearest airport reporting now, 26.7 mi from Annawan, Illinois. From its report of Oct 16, 2026, 10:56 PM local time: 3 of its 6 sheets.
The sky
No cloud below 12,000 ft; visibility 10 mi or more.
The air
44.0 F with a dew point of 33.0 F, 65 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,500 ft up.
The wind
From the north (360 degrees) at 9 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 36 mph.
The full report of Sterling Rockfal, in 6 sheets, each beside the Field Book plates that explain it
What the snow tracker reads here
Every instrument in this state
0in
Snow on the ground
Measured at Kewanee (KEWI2), 10.2 miles from here, read 16 Oct, 07:00. measured daily
Elsewhere in Illinois
23 places, each with its own forecast and its own instruments.
AuroracityBloomingtoncityCarbondalecityChampaigncityChicagocityDanvillecityDecaturcityElgincityGalenatownIllinois RiverfeatureJolietcityLake ShelbyvillefeatureMolinecityMount VernoncityNapervillecityPeoriacityQuincycityRockfordcityShawnee National ForestfeatureSpringfieldcityStarved RockfeatureVilla Oliviaski areaWaukegancity
Near Annawan
The nearest places, each with its own forecast and the instruments nearest it.