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Linn County, IA Weather and Climate Synopsis

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7 Day Forecast Medium & Long Range Outlook Almanac Historical Facts

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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
432 AM CDT Wed Aug 15 2018

Scattered showers were found over portions of western and northern
Iowa, as well as a few isolated showers in eastern Iowa. Otherwise, 
overcast skies and light winds prevailed across the state. At 4 AM, 
temperatures ranged in the upper 60s to lower 70s. Some patchy fog was
found over northwest Iowa and far southern Iowa where visibility was 
reduced to less than a half mile in spots. 

Expect the light rain showers to persist over much of the state 
through the mid morning before shifting to just eastern Iowa this 
afternoon. Another pulse of energy provides showers and thunderstorms 
Thursday afternoon and evening. A few isolated severe storms are 
possible during this time across southwest Iowa into northeast Kansas 
and southeast Nebraska. Another round of storms is possible on Sunday 
into Sunday night as a cold front sweeps through the region. Much 
cooler weather is in store by early next week where highs look to 
remain in the middle to upper 70s. 

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 900 AM CDT WED AUG 15 2018

CEDAR RAPIDS   CLOUDY    71  70  96 SE6       29.92R FOG              
CHARLES CITY * FAIR      73  72  94 N6        29.94S FOG              
CLINTON *      HVY RAIN  72  71  97 S5        29.94R FOG              
DECORAH *      FAIR      75  73  94 CALM      29.93R                  
DUBUQUE        LGT RAIN  73  70  90 E5        29.95R FOG              
MONTICELLO *   FAIR      72  72 100 CALM      29.93R FOG              
OELWEIN *      FAIR      73  72  94 SE5       29.94S                  
WATERLOO       FAIR      73  70  90 CALM      29.92R FOG              

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

Current Agricultural Weather Conditions in Iowa
Based on observations at 900am CDT, Wednesday August 15, 2018

Across Iowa...temperatures are near 73 degrees west, near 73 degrees central, and near 73 degrees east. Current sky conditions are mostly sunny west, cloudy central, and cloudy east. In the west, relative humidity is near 68%, and the dew point is near 62 degrees. In the central part of the state, relative humidity is near 96%, and the dew point is near 72 degrees. In the east, relative humidity is near 93%, and the dew point is near 71 degrees. The livestock heat stress category is no stress west, no stress central, and no stress east. Winds are variable at 5 mph west, where conditions are favorable for spraying. Winds are from the east at 5 mph central, where conditions are favorable for spraying. Winds are from the southeast at 8 mph east, where conditions are favorable for spraying. Based on current available observations, the highest temperature is 75 degrees at Quad Cities and Pella. The lowest temperature is 66 degrees at Storm Lake.

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

325 AM CDT Wed Aug 15 2018


Today. Isolated thunderstorms are possible. The only risk should be


Thursday and Friday: Isolated thunderstorms are possible. The main 
risk will be lightning.

Sunday night through Monday evening: A strong storm system will 
bring thunderstorms to the area. However, it is too early to 
determine the severe weather potential.


Spotter activation is not expected to be needed today or tonight.

NWS Severe Weather Map , Convective Outlook

7-Day Forecast For LINN County, IA
542 AM CDT Wed Aug 15 2018

Mostly cloudy with scattered showers and isolated thunderstorms. High in the upper 70s. East wind 5 to 10 mph. Chance of rain 50 percent.

Mostly cloudy. Isolated showers in the evening. Low in the mid 60s. Northeast wind 5 to 10 mph. Chance of showers 20 percent.

Mostly cloudy with a 40 percent chance of showers and thunderstorms. High in the lower 80s. North wind 5 to 10 mph.

Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a slight chance of showers after midnight. Low in the mid 60s. North wind 5 to 10 mph. Chance of rain 20 percent.

Partly sunny with a 30 percent chance of showers. High in the lower 80s. North wind 5 to 10 mph.

Mostly clear. Low in the mid 60s.

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

Mostly sunny. High in the lower 80s.

Mostly cloudy with a 50 percent chance of showers. Low in the mid 60s. High in the upper 70s.

Mostly cloudy in the evening then becoming partly cloudy. Low around 60.

Mostly sunny. High in the mid 70s.

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 
                   AUG 20-24    AUG 22-28    AUG       AUG-OCT                      
                 -----------  -----------  --------  ---------
   Temperature:      Below        Below      Above      Above                      
 Precipitation:      Above        Below     Normal     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

Wednesday August 15, 2018 the 227th Day of Year

Declination 13.730000
Distance 0.999717 AU
Rise 07:22 EDT Set 21:14 EDT
Transit Meridian 14:18 EDT
Civil Twilight Begins 06:54 EDT Ends 21:42 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

Tornadoes were reported in Connecticut, Rhode Island, Massachusetts, and
New Hampshire. Wethersfield CT was hard hit by the tornado outbreak. (David
Saint Louis MO was deluged with a record 8.78 inches of rain in 24 hours.
(The Weather Channel)
The "sundance fire" in northern Idaho was started by lightning. Winds of 50
mph carried firebrands as much as ten miles in advance to ignite new fires,
and as a result, the forest fire spread twenty miles across the Selkirk
Mountains in just twelve hours, burning 56,000 acres. The heat of the fire
produced whirlwinds of flame with winds up to 300 mph which flung giant
trees about like matchsticks. (David Ludlum)
Thunderstorms developing ahead of a sharp cold front produced severe
weather in the Upper Midwest during the afternoon and evening hours, with
Minnesota and eastern South Dakota hardest hit. A thunderstorm in west
central Minnesota spawned a tornado at Eagle Lake which killed one person
and injured eight others. A thunder- storm in eastern South Dakota produced
softball size hail at Warner. (The National Weather Summary) (Storm Data)
Thirty five cities in twenty states in the north central and northeastern
U.S. reported record high temperatures for the date, including Lamoni IA
and Baltimore MD, where the mercury hit 105 degrees. Temperatures 100
degrees or above were reported in twenty-two states. Pierre SD was the hot
spot in the nation with a high of 114 degrees. Bluefield WV reported eight
straight days of record heat. (The National Weather Summary)
Evening thunderstorms in eastern New Mexico produced wind gusts to 66 mph
at Clovis. Evening thunderstorms in West Texas produced baseball size hail
around Hereford, Dimmitt, Ware and Dalhart. (The National Weather Summary)
(Storm Data)

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