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Linn County, IA Weather and Climate Synopsis

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36 Hr. Forecast Map
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Weather Summary Hourly Observations Nowcast Precision Ag., Lawn & Garden Guidance
7 Day Forecast Medium & Long Range Outlook Almanac Historical Facts

US Weekly Rainfall Departure

US Weekly Temperature Departure
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A joint service of the UK Ag Weather Center and the National Weather Service.

Weather Summary for Iowa
National Weather Service Des Moines IA
517 PM CDT Mon May 21 2018

Showers lingered across northeast Iowa this evening, eventually 
moving out of the state later this afternoon. Most of the state was 
under cloudy skies for most of the day, before clearing out some 
across the southwest half of the state this afternoon. Winds today 
have been light and variable. Highs today varied across the state, 
with low 60s northeast where clouds and rain persisted through the 
day. Meanwhile temperatures increased into southern iowa where highs 
this afternoon were in the mid 70s.

Overnight tonight fog development is expected, particularly over the
northwest half of the state and into central Iowa. This fog should
lift by noon Tuesday with highs in the low 80s west and mid 70s east.
Warm and humid conditions are expected through the rest of the week,
with storm chances late Tuesday night through Wednesday and again on 
Thursday. The severe potential for these storms appears low, however 
there is a threat for heavy precipitation and flooding concerns.

National Ag. Weather Outlook, International Ag. Weather Summary
Current Surface Map, [2nd Source TWC]

Precision Agriculture Weather Forecast For LINN County

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Regional Hourly Observations For LINN County
Issued at 1200 AM CDT TUE MAY 22 2018

CEDAR RAPIDS   CLOUDY    60  59  96 CALM      30.01R FOG              
CHARLES CITY * CLOUDY    59  57  94 CALM      30.01S                  
CLINTON *      CLOUDY   N/A N/A N/A W8        30.00S HAZE             
DECORAH *      CLOUDY    57  57 100 CALM      29.99F FOG              
DUBUQUE        CLOUDY    59  58  96 N3        30.00S FOG              
MONTICELLO *   CLOUDY    61  61 100 W6        30.00R                  
OELWEIN *      CLOUDY    59  59 100 CALM      30.01S                  
WATERLOO       MOCLDY    56  56 100 CALM      30.00S FOG              

Current Temperatures, Dewpoint, RH, Wind, Regional Obs, Surface 4-Panel

Current Agricultural Weather Conditions in Iowa
Based on observations at 1200am CDT, Tuesday May 22, 2018

Across Iowa...temperatures are near 57 degrees west, near 65 degrees central, and near 63 degrees east. Current sky conditions are partly cloudy west, partly cloudy central, and cloudy east. In the west, relative humidity is near 89%, and the dew point is near 54 degrees. In the central part of the state, relative humidity is near 87%, and the dew point is near 61 degrees. In the east, relative humidity is near 90%, and the dew point is near 60 degrees. The livestock heat stress category is no stress west, no stress central, and no stress east. There is patchy fog east. Winds are from the east at 6 mph west, where conditions are favorable for spraying. Winds are from the east at 8 mph central, where conditions are favorable for spraying. Winds are from the northwest at 6 mph east, where conditions are favorable for spraying. Based on current available observations, the highest temperature is 65 degrees at Des Moines. The lowest temperature is 56 degrees at Waterloo, Spencer, Marshalltown, and Estherville.

Current NOWCAST not available:
Nowcasts are not issued routinely during fair weather. Only when
precipitation or other significant weather is occuring in this county will these
forecasts be issued. Currently, there is no short term forecast in effect.

US Radar, All NWS Radars (In near-real time), Current Livestock Heat Stress Index (LSI), Current Wind Chill Map
Hazardous Weather Outlook For LINN County,IA

258 PM CDT Mon May 21 2018


A few thunderstorms are possible through early evening in
northwest Illinois, but severe storms are not expected.

Dense fog is possible after midnight tonight, especially south of
Interstate 80.


Isolated thunderstorms are possible late Tuesday and continuing 
daily into the weekend. There will be long stretches of dry 
weather as storm coverage remains low. The threat for organized 
severe storms appears to be low at this time.


Spotter activation is not anticipated today and tonight.

NWS Severe Weather Map , Convective Outlook

7-Day Forecast For LINN County, IA
1027 PM CDT Mon May 21 2018

Mostly cloudy. Areas of fog through the night. Low in the mid 50s. Northwest wind 5 to 10 mph.

Partly sunny. Patchy fog in the morning. High in the mid 70s. Northwest wind 5 to 10 mph.

Partly cloudy. A 40 percent chance of showers and thunderstorms after midnight. Low in the upper 50s. East wind 5 to 10 mph.

Partly sunny with a 40 percent chance of showers and thunderstorms. High around 80. Southeast wind 5 to 10 mph.

Partly cloudy with a 20 percent chance of showers and thunderstorms. Low in the lower 60s. Southeast wind 5 to 10 mph.

Mostly sunny. High in the mid 80s.

Partly cloudy. Low in the mid 60s.

Mostly cloudy. A 40 percent chance of showers and thunderstorms. High in the mid 80s. Low in the mid 60s.

Partly cloudy. High in the mid 80s. Low in the lower 60s.

Mostly clear. High in the lower 80s. Low in the lower 60s.

12-48 Hr Surface Forecast Maps, TWC 4-Panel Surface Forecast, Fire Danger, Day 1 Precip, Day 2 Precip, Days 1-5 Precip, Severe Weather Pot.-Day 1, Day 2

Medium & Long Range Outlook For Iowa
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
               MAY 27-MAY 31 MAY 29-JUN 4    MAY       MAY-JUL                      
                 -----------  -----------  --------  ---------
   Temperature:      Above        Above      Above     Normal                      
 Precipitation:      Below        Below      Above     Normal                      

....  Medium and long range outlooks provided by NCEP/K. Thomas Priddy
5 Day Rainfall Forecast, 6 to 10 Day , 8 to 14 Day , Text, 30-Day Outook, 90-Day Outook, 120-Day Outlook
Almanac Information

Tuesday May 22, 2018 the 142th Day of Year

Declination 20.580000
Distance 0.999717 AU
Rise 06:47 EDT Set 21:35 EDT
Transit Meridian 14:10 EDT
Civil Twilight Begins 06:15 EDT Ends 22:07 EDT

Calculations made for central point in the state.
Time in ET -- and will vary due to location and
elevation -- Priddy

Historical Weather And Climate Facts For Today

Denver CO was drenched with 6.53 inches of rain in 24 hours, an all-time
record for that location. (The Weather Channel)
The temperature at Lewiston ME soared to 101 degrees. It was the hottest
temperature ever recorded in New England during the month of May. (David
A powerful tornado virtually wiped the small southwest Texas community of
Saragosa off the map. The twister destroyed eighty- five percent of the
structures in the town killing thirty persons and injuring 121 others in
the town of population 183. The tornado hurled trucks and autos through
adobe and wood- frame homes, with some vehicles blown 500 feet. (The
National Weather Summary) (Storm Data)

Ag Weather Center, Department of Biosystems & Agricultural Engineering, University of Kentucky