Sioux County Weather and Climate Synopsis



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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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Weather Summary for Iowa
National Weather Service Des Moines IA
523 AM CDT Tue Apr 16 2024

Today: 

Showers and storms have been ongoing through much of the overnight 
hours. Frequent lightning and gusty winds have been associated with
storms so far early this morning, but some hail remains possible.
Temperatures as of 5 AM are mild and in the 50s to 60s across much of
the state. Winds out of the southeast to east remain breezy to gusty
with gusts up to around 35-40 mph. 

Today will be a stormy day with multiple rounds of storms possible.
Some of these storms will likely be severe with large hail, damaging
wind gusts, and some tornadoes all possible. A few of the storms could
produce significant severe weather. In addition to the storms, gusty
winds will continue through the day today with gusts up to 50 mph
possible outside of thunderstorms. A Wind Advisory is in effect for
much of central into northwest and northeast Iowa today for these 
strong wind gusts, though wind gusts in some thunderstorms may be 
higher. High temperatures today will be in the 60s to 70s. Make sure 
you have multiple ways to receive warnings today and stay weather 
aware!

Tonight and beyond: 

The severe weather potential will end tonight, but some showers may 
linger into early Wednesday, especially northeast. Additional showers
are likely Thursday from central Iowa into the Missouri Valley. 
Cooler temperatures can be expected to end the work week as well, with
highs in the 50s and lows in the 30s.

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

Precision Agriculture Weather Forecast For SIOUX County

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Regional Hourly Observations For SIOUX County
Issued at 500 PM CDT TUE APR 16 2024

NORTHWEST IOWA CITY SKY/WX TMP DP RH WIND PRES REMARKS CARROLL * MOSUNNY 64 52 63 W21G31 29.34R TC 18 DENISON * MOSUNNY 64 50 59 NW12 29.36R TC 18 LE MARS * PTSUNNY N/A N/A N/A SW5G12 29.26F MAURICE * MOSUNNY 57 50 77 S22 29.29R TC 14 SHELDON * SUNNY 59 50 72 W12 29.29R TC 15 SIOUX CITY CLOUDY 59 52 77 SW8 29.28F TC 15 SPENCER PTSUNNY 66 49 54 N13 29.31F TC 19 STORM LAKE * MOSUNNY 59 48 67 W18G29 29.33R TC 15

Current Temperatures, Dewpoint, RH, Wind, Regional Obs, Surface 4-Panel
Current Agricultural Weather Conditions in Iowa
Based on observations at 400pm CDT, Tuesday April 16, 2024

Across Iowa...temperatures are near 55 degrees west, near 76 degrees central, and near 69 degrees east. Current sky conditions are rain west, mostly sunny central, and rain east. In the west, relative humidity is near 86%, and the dew point is near 51 degrees. In the central part of the state, relative humidity is near 44%, and the dew point is near 53 degrees. In the east, relative humidity is near 81%, and the dew point is near 63 degrees. There is patchy fog west. Visibility is less than one mile east. Winds are from the south at 12 mph with gusts at 21 mph west, where conditions are not favorable for spraying due to strong winds and rain. Winds are from the south at 16 mph central, where conditions are not favorable for spraying due to strong winds. Winds are from the south at 28 mph with gusts at 44 mph east, where conditions are not favorable for spraying due to strong winds and rain. Based on current available observations, the highest temperature is 77 degrees at Lamoni. The lowest temperature is 55 degrees at Sioux City.

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 SIOUX County,IA

422 AM CDT Tue Apr 16 2024 DAY ONE Today and tonight. A strong low pressure system is bringing showers and thunderstorms to the region. Some of these storms may be strong to severe, with the greatest threat being large hail up to half dollar and damaging wind gusts. Rain rates of 1 to 2 inches per hour are possible under stronger storms, which may result in brief urban flash flooding and ponding in low laying areas. Showers and thunderstorms continue through Tuesday afternoon before a brief lull when the dry slot passes over the region. Lighter showers will redevelop on the backside of the low pressure and continue through early Wednesday morning. In addition, strong easterly winds sustained at 20-30 mph with gusts 45-55 mph are occurring and will continue through Tuesday afternoon. A Wind Advisory is in effect until 7 pm tonight. DAYS TWO THROUGH SEVEN Wednesday through Monday. Rain tapers off but winds remain strong through Wednesday afternoon. Thursday brings another chance for rain, but confidence is low on exact timing due to high variance in guidance. Cooler and dry for the weekend. SPOTTER INFORMATION STATEMENT Spotter activation is not expected at this time.
NWS Severe Weather Map , Convective Outlook

7-Day Forecast For SIOUX County, IA
458 PM CDT Tue Apr 16 2024 TONIGHT
Mostly cloudy with a chance of showers. A chance of thunderstorms, mainly this evening. Some thunderstorms may produce damaging winds, large hail, and tornadoes this evening. Breezy with lows in the upper 40s. South winds 10 to 15 mph, increasing to northwest 20 to 25 mph with gusts up to 35 mph after midnight. Chance of rain 50 percent.
WEDNESDAY
Cloudy with a slight chance of showers in the morning, then mostly sunny in the afternoon. Breezy with highs in the lower 60s. Northwest winds 20 to 25 mph with gusts up to 40 mph. Chance of rain 20 percent.
WEDNESDAY NIGHT
Mostly cloudy. A chance of showers in the evening, then showers after midnight. Lows in the lower 40s. Northwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 90 percent.
THURSDAY
Partly sunny. A chance of showers in the morning. Breezy with highs in the lower 50s. Northwest winds 15 to 25 mph. Chance of rain 40 percent.
THURSDAY NIGHT
Mostly clear. Cooler with lows in the lower 30s. Northwest winds 15 to 20 mph with gusts up to 30 mph, becoming west around 10 mph with gusts up to 20 mph after midnight.
FRIDAY
Mostly sunny and windy. Highs around 50.
FRIDAY NIGHT
Partly cloudy in the evening, then clearing. Breezy with lows in the upper 20s.
SATURDAY
Mostly sunny. Highs around 50.
SATURDAY NIGHT
Mostly cloudy in the evening, then clearing. Lows in the upper 20s.
SUNDAY
Sunny. Highs in the upper 50s.
SUNDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Not as cool with lows in the upper 30s.
MONDAY
Partly sunny. A chance of showers in the afternoon. Highs in the lower 60s. Chance of rain 30 percent.
MONDAY NIGHT
Partly cloudy. Lows around 40.
TUESDAY
Mostly sunny. Highs in the mid 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 IOWA --------------------------------------------- 6 TO 10 DAY 8 TO 14 DAY 30 DAY 90 DAY APR 22-26 APR 24-30 JUN JUN-AUG ----------- ----------- -------- --------- Temperature: Precipitation: .... 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 April 16, 2024 the 107th Day of Year --------------------------------------------------- SUN Declination 10.670000 Distance 0.999719 AU Rise 07:30 EDT Set 20:58 EDT Transit Meridian 14:13 EDT Civil Twilight Begins 07:02 EDT Ends 21:26 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

APRIL 16TH HISTORIC WEATHER EVENTS ...1851... The famous "Lighthouse Storm" raged near Boston Harbor. Whole gales and gigantic waves destroyed Minot Light with its two keepers still inside. The storm resulted in great shipping losses and coastal erosion. (David Ludlum) ...1880... A tornado near Marshall MO carried the heavy timbers of an entire home a distance of twelve miles. (The Weather Channel) ...1933... Franklin Lake NH was buried under 35 inches of snow. (Sandra and TI Richard Sanders - 1987) ...1960... A wind gust of 70 mph was measured at the Stapleton International Airport in Denver CO, their highest wind gust of record. (The Weather Channel)

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