Iowa drought

Is Lyon County in a drought?

D1 Moderate drought

Yes. 0.1% of Lyon County is in drought on the Drought Monitor map of Sep 15, 2026, the worst of it moderate drought (D1). The share in drought shrank from 12.1% a week earlier. It has been in drought since the week of Oct 14, 2025.

Map valid Sep 15, 2026, released Thursday, Sep 17, 2026. The next map is due Thursday, Sep 24, 2026. Statewide, 6.8% of Iowa is in drought.

Lyon County forecastWeather alertsLive radar here

This week’s map

The Drought Monitor for Iowa, valid Sep 15, 2026. County lines are drawn in; the categories are the same as the national map.

US Drought Monitor map of Iowa for Sep 15, 2026, shaded D0 abnormally dry through D4 exceptional drought
  • D0 Abnormally dry
  • D1 Moderate drought
  • D2 Severe drought
  • D3 Extreme drought
  • D4 Exceptional drought

Open the live map with the Drought Monitor

Map courtesy of the US Drought Monitor, NDMC-UNL, with USDA and NOAA. Original at droughtmonitor.unl.edu

This week's map, by category

Percent of Lyon County in each category or worse, the Drought Monitor's own way of counting. In exactly one category this week: D0 69.1%, D1 0.1%, D2 0%, D3 0%, D4 0%; none 30.8%.

CategoryThis weekSep 15Last weekSep 83 months agoJun 16A year agoSep 16
D0 to D4 Abnormally dry or worse69.2%100%100%0.3%
D1 to D4 Moderate or worse0.1%12.1%59.2%0%
D2 to D4 Severe or worse0%0%0%0%
D3 to D4 Extreme or worse0%0%0%0%
D4 Exceptional drought0%0%0%0%
None30.8%0%0%99.7%

The past year

Percent of Lyon County in each category, week by week. Each color includes the worse categories drawn over it.

Percent of Lyon County in drought categories from Sep 16, 2025 to Sep 15, 2026. On the latest map, 0.1% is in drought (D1 or worse) and 69.2% is abnormally dry or worse.0%25%50%75%100%OctNovDec2026FebMarAprMayJunJulAugSep
  • D0 Abnormally dry
  • D1 Moderate drought
  • D2 Severe drought
  • D3 Extreme drought
  • D4 Exceptional drought
Every week in the chart
MapD0+D1+D2+D3+D4+
Sep 15, 202669.2%0.1%0%0%0%
Sep 8, 2026100%12.1%0%0%0%
Sep 1, 2026100%96.7%8%0%0%
Aug 25, 2026100%96.7%8%0%0%
Aug 18, 2026100%96.7%5.2%0%0%
Aug 11, 2026100%96.7%5.2%0%0%
Aug 4, 2026100%72.2%0%0%0%
Jul 28, 2026100%2.4%0%0%0%
Jul 21, 2026100%2.4%0%0%0%
Jul 14, 2026100%2.4%0%0%0%
Jul 7, 2026100%2.4%0%0%0%
Jun 30, 2026100%2.4%0%0%0%
Jun 23, 2026100%61.3%0%0%0%
Jun 16, 2026100%59.2%0%0%0%
Jun 9, 2026100%59.2%0%0%0%
Jun 2, 2026100%59.2%0%0%0%
May 26, 2026100%59.2%4.7%0%0%
May 19, 2026100%59.2%4.7%0%0%
May 12, 2026100%59.2%4.7%0%0%
May 5, 2026100%59.2%4.7%0%0%
Apr 28, 2026100%59.2%4.7%0%0%
Apr 21, 2026100%100%34.5%0%0%
Apr 14, 2026100%100%2.4%0%0%
Apr 7, 2026100%100%100%0%0%
Mar 31, 2026100%100%100%0%0%
Mar 24, 2026100%100%0%0%0%
Mar 17, 2026100%100%0%0%0%
Mar 10, 2026100%100%0%0%0%
Mar 3, 2026100%100%0%0%0%
Feb 24, 2026100%100%0%0%0%
Feb 17, 2026100%47.4%0%0%0%
Feb 10, 2026100%47%0%0%0%
Feb 3, 202688.2%47%0%0%0%
Jan 27, 202688.2%47%0%0%0%
Jan 20, 202687.1%47%0%0%0%
Jan 13, 202687.1%47%0%0%0%
Jan 6, 202690.1%47%0%0%0%
Dec 30, 202590.1%47%0%0%0%
Dec 23, 202590.1%47%0%0%0%
Dec 16, 2025100%47%0%0%0%
Dec 9, 2025100%47%0%0%0%
Dec 2, 2025100%47%0%0%0%
Nov 25, 2025100%47.2%0%0%0%
Nov 18, 2025100%47.2%0%0%0%
Nov 11, 2025100%47.2%0%0%0%
Nov 4, 2025100%47.2%0%0%0%
Oct 28, 2025100%47.2%0%0%0%
Oct 21, 2025100%47.2%0%0%0%
Oct 14, 2025100%47.2%0%0%0%
Oct 7, 2025100%0%0%0%0%
Sep 30, 2025100%0%0%0%0%
Sep 23, 20250.3%0%0%0%0%
Sep 16, 20250.3%0%0%0%0%

Since 2000

Every weekly map of Lyon County since January 2000.

Percent of Lyon County in drought categories from Jan 4, 2000 to Sep 15, 2026. On the latest map, 0.1% is in drought (D1 or worse) and 69.2% is abnormally dry or worse.0%25%50%75%100%200420082012201620202024
  • D0 Abnormally dry
  • D1 Moderate drought
  • D2 Severe drought
  • D3 Extreme drought
  • D4 Exceptional drought
Year by year
YearWorst categoryMost in droughtWeek ofWeeks with drought
2026D2 Severe drought100%Feb 2437 of 37
2025D1 Moderate drought100%Jan 738 of 52
2024D2 Severe drought100%Oct 828 of 53
2023D2 Severe drought100%May 3052 of 52
2022D2 Severe drought100%Nov 125 of 52
2021D3 Extreme drought100%Jan 534 of 52
2020D3 Extreme drought100%Sep 123 of 52
2019D0 Abnormally dry0%0 of 53
2018D0 Abnormally dry0%0 of 52
2017D1 Moderate drought100%Aug 16 of 52
2016D0 Abnormally dry0%0 of 52
2015D1 Moderate drought82.7%May 53 of 52
2014D1 Moderate drought100%May 66 of 52
2013D4 Exceptional drought100%Jan 126 of 53
2012D4 Exceptional drought100%Jan 346 of 52
2011D2 Severe drought100%Oct 1119 of 52
2010None0%0 of 52
2009D0 Abnormally dry0%0 of 52
2008D0 Abnormally dry0%0 of 53
2007D2 Severe drought100%Jul 178 of 52
2006D2 Severe drought100%Jul 255 of 52
2005D0 Abnormally dry0%0 of 52
2004D0 Abnormally dry0%0 of 52
2003D2 Severe drought100%Sep 95 of 52
2002D1 Moderate drought100%Jul 93 of 53
2001D0 Abnormally dry0%0 of 52
2000D2 Severe drought100%Jan 429 of 52

Drought history since 2000

Some part of Lyon County was in drought on 28% of the weekly maps since Jan 4, 2000, and exceptional drought (D4) last reached the county the week of Mar 5, 2013.

Weeks with some drought
393 of 1,394 (28%)
Worst category reached
D4 Exceptional drought, last the week of Mar 5, 2013
Most widespread
100% in drought, week of Apr 21, 2026
Longest spell
88 weeks, Jul 19, 2022 to Mar 19, 2024
Current spell
49 weeks, since Oct 14, 2025

Outlook

The Climate Prediction Center's drought outlooks at the center of Lyon County: whether drought is expected to develop, persist, improve or end.

Monthly outlook, Sep 2026
Drought persists
Seasonal outlook, through December 31 (issued Sep 17)
No drought expected

The monthly outlook is issued on the last day of each month, the seasonal one on the third Thursday. CPC's discussion.

What drought has meant in Iowa

The National Drought Mitigation Center's examples of impacts observed in Iowa at each level of drought, starting with this week's worst here.

D1 Moderate drought This week

  • Grasses are brown; more grass fires occur; burn bans are issued
  • Pond levels decline
  • Soybeans abort pods; corn test weights are struggling

D0 Abnormally dry

  • Corn shows drought stress; soil is dry

D2 Severe drought

  • Dryland corn has extremely low yields; commodity shortages are noted; livestock is stressed
  • Fewer mosquitoes are observed
  • Fire danger is high
  • Surface water levels are low; algae blooms increase; voluntary water conservation is requested

D3 Extreme drought

  • Pastures are dry; producers sell cattle; crops are tested for toxins; crops have pest infestation
  • Seasonal allergies are worse; farmers are stressed about high feed prices
  • Trees drop leaves; acorns are underdeveloped
  • Warm water leads to fish kills; streambeds are low to dry

D4 Exceptional drought

  • Aquatic invertebrates in waterways increase
  • Extreme measures are taken to conserve water
  • Row crop yields and forage production have significant impacts

Drawn from the Drought Impact Reporter and local observers.

Burn bans and water restrictions

The Drought Monitor does not issue burn bans or water restrictions. Lyon County's officials, the state forestry or fire agency, and local water utilities set them, often once drought reaches D2 or dry fuels raise the fire danger. Check the county's emergency management office or fire marshal for a ban in force, and the alerts page for red flag warnings and fire weather watches.

This week in the Midwest

The Drought Monitor authors' narrative for the map of Sep 15, 2026, released Sep 17, 2026.

Significant rainfall was observed over western Kentucky as well as over central-to-north Missouri, leading in removal of abnormally dry conditions. Heavy rain also fell in northwestern Iowa, northern Minnesota, and a band across central Wisconsin, with drought improvement as a result in these locations. Meanwhile, a mostly rain-free week in northern Illinois and Indiana caused introduction of an abnormally dry area. Extreme drought conditions can be found in southern Missouri, northern Wisconsin, and along the borders of Minnesota with both Wisconsin and North Dakota.

Looking ahead

Over the next five days leading up to next Tuesday, above normal rainfall is forecast in south Florida as well as a large area in southern Wisconsin and Minnesota into eastern Iowa and northern Illinois. The latter area of forecasted rainfall continues to the east through central Michigan, the southern Great Lakes, Pennsylvania, New York, and much of central and southern New England. Other locations with rainfall in the forecast this week are in the Appalachian Mountains, the western Great Plains, and the Four Corners states. Unfortunately, most of Texas, Oklahoma, Arkansas, Louisiana, Mississippi, and Alabama are forecast to receive little rainfall. Dry conditions are also forecast in California, Nevada, and Washington. Much above normal temperatures are forecast to continue this week in the central and southern U.S.

The 6- to 10-day outlook (September 22-26, 2026) favors above normal temperatures continuing over nearly all of the continental United States. Areas most likely to be above normal are again the south into the southeast, plus the far north. Hawaii is also likely to be above normal. For precipitation, the Eastern Seaboard is likely to have above normal rainfall as is the Southwest. The central U.S. into the upper Midwest is likely to have below normal rainfall. Hawaii and Alaska are both likely to have above normal rain during this period.

Written by Lindsay Johnson, National Drought Mitigation Center; David Mocko, SSAI, NASA/GSFC. The national narrative.

What this means

The five categories the Drought Monitor draws, and how the map is made.

D0 Abnormally dry
Going into or coming out of drought.
D1 Moderate drought
Some damage to crops and pastures; water shortages developing.
D2 Severe drought
Crop or pasture losses likely; water restrictions imposed.
D3 Extreme drought
Major crop and pasture losses; widespread water shortages.
D4 Exceptional drought
Exceptional and widespread losses; water emergencies.

The US Drought Monitor is drawn every week by authors at the National Drought Mitigation Center, USDA and NOAA, who weigh rainfall, soil moisture, streamflow, groundwater, vegetation health and reports from local observers. Each map shows conditions through Tuesday morning and is released on Thursday. It shows where drought is and how bad it is; it does not forecast it. CPC's outlooks do that.

Nearby

The counties bordering Lyon County, with the worst category on this week's map.

Sources

Statistics and narrative from the US Drought Monitor, courtesy of the National Drought Mitigation Center at the University of Nebraska-Lincoln, with USDA and NOAA. Outlooks from the NOAA Climate Prediction Center. Impacts from NDMC's State Impacts tool.