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Frost Advisory FROST ADVISORY - Knox County

NWS Central Great Lakes Regional Radar WU East Central Satellite
Radar/Satellite images courtesy of NOAA/NWS and Weather Underground.
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METRIC | IMPERIAL
Updated: 05/12/2026 @ 6:35am   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Colder 0.9°F than last hour.

43.5°F

Cold
High Today
53.7°F
12:00 AM 		Low Today
43.5°F
6:33 AM
Yest High
68.0°F
3:56 PM 		Yest Low
39.5°F
6:48 AM
Sta* High
87.3°F
2022 		Sta* Low
29.6°F
2020
* This Station's Records Since 1/2011
Rec* High
97.0°F
1956 		Rec* Low
31.0°F
2013
* Records from Weather Underground
Dry Dry

Calm Wind:  SSE
0.0
Gusting to:
 0.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
2.1 of 100
Overnight

Overnight: Mostly Clear
Mostly Clear
Tuesday

Tuesday: Sunny
Sunny
Tuesday
Night
Tuesday Night: Mostly Cloudy then Rain Showers
Mostly Cloudy then Rain Showers
Lo 42°F Hi 71°F Lo 56°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Decreased 1.2°F since last hour. 34.7°F
Last Hour: Decreased 1.2°F since last hour. 1.2°F
High 12:12 AM: 41.1°F
Low 6:33 AM: 34.7°F
Record High: 83.5°F on
Jul-4-2025
Record Low: -40.7°F on
May-14-2018
Wetbulb: 40.0°F
Leaf Wet:7 0
Rain Today
rain graph
Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.84 in
May Rain: 1.00 in
May to Date
  Avg:10 		0.00 in
May to Date
  Diff from Avg:10 		Over 1 in for the month 1.00 in
May Avg: 4.64 in
Diff from Avg: Under 3.64 in for the month 3.64 in
Season:1 12.54 in
YTD
  Avg:11 		10.15 in
YTD
  Diff from Avg:11 		Over 2.39 in for the year 2.39 in
Last Rain
Time/Date: 		May-9-2026
at 8:58 AM
63 rain days in 2026
5 days in May
2 days since last rain
Current: SSE  0.0 mph
1Hr Average: Calm
Wind Run: 0.02 miles
Wind Gust
Current: 0.0 mph
Today: 2.3 mph 12:01 AM
Month: 14.0 mph May-3
Year: 56.0 mph Feb-11
Record Gust: 56.0 mph
Feb-11-2026
Sunlight:
14 h 6 m 51 s
of Sunlight Yesterday
14 h 8 m 38 s
of Sunlight Today Which is
1 min 47 sec longer than
yesterday
14 h 10 m 23 s
of Sunlight Tomorrow
 (Noon ?>) graph (Midnight
 Legend

Waning Crescent
Waning Crescent, 24 days, 22 hours, 45 minutes in cycle
23%
Illuminated
Humidity Barometer
Current: Decreased 1% since last hour. 71%
Last Hour: Decreased 1% since last hour. 1%
High 4:47 AM: 72%
Low 12:02 AM: 61%
Record High: 99%
Jan-22-2017
Record Low: 0%
Mar-4-2022
Current: Rising 0.01 inHg/hr 31.190 inHg
Last Hour: Steady
High 6:21 AM: 31.194
Low 2:11 AM: 31.154
Record High: 31.946 inHg
Apr-23-2022
Record Low: 25.895 inHg
Apr-12-2021
Heating Degree Days Lightning Strikes Wind Chill Air
Today: 3.9
May: 129.1
2026 to Date: 2893.6
Cooling Degree Days
2026 to Date: 50.4
Last Min: 0
Last 5 Mins: 0
Last 30 Mins: 0
Last 60 Mins: 0
Last 12 Hrs: 0
May: 14
2026 to Date: 4443
Current: 43.5°F
Low 6:33 AM: 43.5°F
Yesterday: 39.5°F
Record: -31.2°F
Dec-23-2022
Quality
Index6:
35

Good
Density:
1.31 kg/m3
Current UV Index Current Solar Energy9
0.0
Sunburn in
720 Minutes 		Highest:
12:00 AM
0.0
0 W/m2
0%
W/m2 ⇒ SI 		High Today:
12:00 AM
 0  W/m2
Record:
2026 W/m2
Soil Conditions8 Irrigation Index5 Station All Time Records Cloud Level
2.4 in: 5.0 cb | 56°F
1.6 in: 5.0 cb | 56°F
0.8 in: 6.0 cb | 56°F
0.2 in: 11.0 cb | 56°F

Growing conditions
at the depth of:  0.2 in:


Soil moisture range is from
0-Wet to 200-Dry/Frozen
Updated at Midnight
Current ET: 0.00 in
7-Days Rain: 0.84 in
7-Days ET: 0.35 in
7-Day: 0.486 in water in excess of what evaporated in last 7 days. 0.486 in
May: 0.48 in water in excess of what evaporated this month. 0.48 in
HIGHS: LOWS:
99.5°F
Jun-21-2022 		-12.5°F
Jan-31-2026
Daytime Records
  95.0°F°F
Jun-24-2025 		  -2.6°F°F
Jan-30-2019
Nitetime Records
  84.2°F°F
Jun-23-2024 		  -6.3°F°F
Jan-01-2018
ICN:18 | S3C2:4 | Ajax 3.xx
ISS:Ok | CON:4.6 | RCP:98%
METRIC | IMPERIAL
Updated: 05/12/2026 @ 6:35am  
1 Rain season: Jan 1st to Dec 31st.   2 Snow season July 1st to June 30th.   3 Snow manually measured usually around 7AM and 7PM.   5 Estimated amount of water needed to replace the water used by plants and evaporation from the past week. (Negative numbers mean amount of water needed, positive numbers mean excess water is present).   6 Air Quality Index is provided by Minnesota Polution Control Agency and is updated hourly between the hours of 6AM and Midnight.   7 Leaf Wetness is surface moisture on foliage. 0 being totally dry and 15 being totally saturated.   8 Soil moisture and temperatures are from sensors burried in the ground at the levels specified.   9 Solar Index represents either an absolute scale of solar energy (W/m²) using the station’s recorded maximum or a percentage of computed theoretical solar maximum using the station’s location and time of day. These indices differ most when the sun is low on the horizon. The current scale is shown, and will toggle if it or the icon is clicked.   10 Historical average only to day 12 of just the month of May for this station since 2011.   11 Historical average rain this season to day 12 of May for this station since 2011.
 NWS Weather Forecast  -   Outlook Overnight & Tuesday
Overnight

Overnight: Mostly Clear
Mostly Clear

Lo 42°F 		NWS forecast: Mostly clear, with a low around 42. Northeast wind around 5 mph.
Local station forecast: Partly cloudy with little temp change. 		Tuesday

Tuesday: Sunny
Sunny

Hi 71°F 		NWS forecast: Sunny, with a high near 71. East wind 2 to 6 mph.
 NWS Short Term Weather Forecast
Tuesday
Night
Tuesday Night: Mostly Cloudy then Rain Showers
Mostly Cloudy then Rain Showers
Wednesday

Wednesday: Rain Showers
Rain Showers
Wednesday
Night
Wednesday Night: Mostly Cloudy
Mostly Cloudy
Thursday

Thursday: Partly Sunny
Partly Sunny
Thursday
Night
Thursday Night: Partly Cloudy
Partly Cloudy
Friday

Friday: Mostly Sunny
Mostly Sunny
Friday
Night
Friday Night: Partly Cloudy then Slight Chance Rain Showers
Partly Cloudy then Slight Chance Rain Showers
Lo 56°F Hi 68°F Lo 44°F Hi 61°F Lo 43°F Hi 70°F Lo 55°F
Script by: Scott of BurnsvilleWeatherLIVE.com
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