California drought

Is San Luis Obispo County in a drought?

No drought

No. San Luis Obispo County has no drought and no abnormally dry areas on the Drought Monitor map of Sep 29, 2026. It was last in drought the week of Oct 14, 2025.

Map valid Sep 29, 2026, released Thursday, Oct 1, 2026. The next map is due Thursday, Oct 8, 2026. Statewide, 23.3% of California is in drought.

San Luis Obispo County forecastWeather alertsLive radar here

This week’s map

The Drought Monitor for California, valid Sep 29, 2026. County lines are drawn in; the categories are the same as the national map.

US Drought Monitor map of California for Sep 29, 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 San Luis Obispo County in each category or worse, the Drought Monitor's own way of counting. In exactly one category this week: D0 0%, D1 0%, D2 0%, D3 0%, D4 0%; none 100%.

CategoryThis weekSep 29Last weekSep 223 months agoJun 30A year agoSep 30
D0 to D4 Abnormally dry or worse0%0%0%94.2%
D1 to D4 Moderate or worse0%0%0%1.5%
D2 to D4 Severe or worse0%0%0%0%
D3 to D4 Extreme or worse0%0%0%0%
D4 Exceptional drought0%0%0%0%
None100%100%100%5.8%

The past year

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

Percent of San Luis Obispo County in drought categories from Sep 30, 2025 to Sep 29, 2026. On the latest map, 0% is in drought (D1 or worse) and 0% 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 29, 20260%0%0%0%0%
Sep 22, 20260%0%0%0%0%
Sep 15, 20260%0%0%0%0%
Sep 8, 20260%0%0%0%0%
Sep 1, 20260%0%0%0%0%
Aug 25, 20260%0%0%0%0%
Aug 18, 20260%0%0%0%0%
Aug 11, 20260%0%0%0%0%
Aug 4, 20260%0%0%0%0%
Jul 28, 20260%0%0%0%0%
Jul 21, 20260%0%0%0%0%
Jul 14, 20260%0%0%0%0%
Jul 7, 20260%0%0%0%0%
Jun 30, 20260%0%0%0%0%
Jun 23, 20260%0%0%0%0%
Jun 16, 20260%0%0%0%0%
Jun 9, 20260%0%0%0%0%
Jun 2, 20260%0%0%0%0%
May 26, 20260%0%0%0%0%
May 19, 20260%0%0%0%0%
May 12, 20260%0%0%0%0%
May 5, 20260%0%0%0%0%
Apr 28, 20260%0%0%0%0%
Apr 21, 20260%0%0%0%0%
Apr 14, 20260%0%0%0%0%
Apr 7, 20260%0%0%0%0%
Mar 31, 20260%0%0%0%0%
Mar 24, 20260%0%0%0%0%
Mar 17, 20260%0%0%0%0%
Mar 10, 20260%0%0%0%0%
Mar 3, 20260%0%0%0%0%
Feb 24, 20260%0%0%0%0%
Feb 17, 20260%0%0%0%0%
Feb 10, 20260%0%0%0%0%
Feb 3, 20260%0%0%0%0%
Jan 27, 20260%0%0%0%0%
Jan 20, 20260%0%0%0%0%
Jan 13, 20260%0%0%0%0%
Jan 6, 20260%0%0%0%0%
Dec 30, 20250%0%0%0%0%
Dec 23, 20250%0%0%0%0%
Dec 16, 20250%0%0%0%0%
Dec 9, 20250%0%0%0%0%
Dec 2, 20250%0%0%0%0%
Nov 25, 20250%0%0%0%0%
Nov 18, 20250%0%0%0%0%
Nov 11, 202593.9%0%0%0%0%
Nov 4, 202593.9%0%0%0%0%
Oct 28, 202593.9%0%0%0%0%
Oct 21, 202594%0%0%0%0%
Oct 14, 202594%1.5%0%0%0%
Oct 7, 202594.2%1.5%0%0%0%
Sep 30, 202594.2%1.5%0%0%0%

Since 2000

Every weekly map of San Luis Obispo County since January 2000.

Percent of San Luis Obispo County in drought categories from Jan 4, 2000 to Sep 29, 2026. On the latest map, 0% is in drought (D1 or worse) and 0% 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
2026None0%0 of 39
2025D1 Moderate drought92.8%Jan 2841 of 52
2024D0 Abnormally dry0%0 of 53
2023D3 Extreme drought100%Jan 38 of 52
2022D4 Exceptional drought100%Jan 452 of 52
2021D4 Exceptional drought100%Jan 552 of 52
2020D1 Moderate drought100%Dec 810 of 52
2019D2 Severe drought100%Jan 15 of 53
2018D2 Severe drought100%Nov 2052 of 52
2017D4 Exceptional drought100%Jan 352 of 52
2016D4 Exceptional drought100%Jan 552 of 52
2015D4 Exceptional drought100%Jan 652 of 52
2014D4 Exceptional drought100%Jan 752 of 52
2013D3 Extreme drought100%May 753 of 53
2012D2 Severe drought100%Mar 1345 of 52
2011D0 Abnormally dry0%0 of 52
2010D1 Moderate drought83.7%Jan 53 of 52
2009D2 Severe drought100%Jan 652 of 52
2008D3 Extreme drought100%Jan 153 of 53
2007D3 Extreme drought100%Apr 349 of 52
2006D0 Abnormally dry0%0 of 52
2005D0 Abnormally dry0%0 of 52
2004D2 Severe drought93.9%Sep 1426 of 52
2003D1 Moderate drought1.6%Oct 281 of 52
2002D1 Moderate drought37.3%Jul 3021 of 53
2001D0 Abnormally dry0%0 of 52
2000D0 Abnormally dry0%0 of 52

Drought history since 2000

Some part of San Luis Obispo County was in drought on 52% of the weekly maps since Jan 4, 2000, and exceptional drought (D4) last reached the county the week of Dec 6, 2022.

Weeks with some drought
731 of 1,396 (52%)
Worst category reached
D4 Exceptional drought, last the week of Dec 6, 2022
Most widespread
100% in drought, week of Jan 10, 2023
Longest spell
363 weeks, Feb 21, 2012 to Jan 29, 2019
Last in drought
Week of Oct 14, 2025

Outlook

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

Monthly outlook, Oct 2026
No drought expected
Seasonal outlook, through December 31 (issued Sep 30)
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 California

The National Drought Mitigation Center's examples of impacts observed in California at each level of drought.

D0 Abnormally dry

  • Active fire season begins
  • Dryland crop germination is stunted
  • Soil is dry; irrigation delivery begins early
  • Winter resort visitation is low; snowpack is minimal

D1 Moderate drought

  • Dryland pasture growth is stunted; producers give supplemental feed to cattle
  • Landscaping and gardens need irrigation earlier; wildlife patterns begin to change
  • Stock ponds and creeks are lower than usual

D2 Severe drought

  • Fire season is longer, with high burn intensity, dry fuels, and large fire spatial extent; more fire crews are on staff
  • Grazing land is inadequate
  • Producers increase water efficiency methods and drought-resistant crops
  • River flows decrease; reservoir levels are low and banks are exposed
  • Trees are stressed; plants increase reproductive mechanisms; wildlife diseases increase
  • Water temperature increases; programs to divert water to protect fish begin
  • Wine country tourism increases; lake- and river-based tourism declines; boat ramps close

D3 Extreme drought

  • Dairy operations close
  • Federal water is not adequate to meet irrigation contracts; extracting supplemental groundwater is expensive
  • Fire season lasts year-round; fires occur in typically wet parts of state; burn bans are implemented
  • Fruit trees bud early; producers begin irrigating in the winter
  • Livestock need expensive supplemental feed, cattle and horses are sold; little pasture remains, producers find it difficult to maintain organic meat requirements
  • Low river levels impede fish migration and cause lower survival rates
  • Orchard removal and well drilling company business increase; panning for gold increases
  • Ski and rafting business is low, mountain communities suffer
  • Water conservation rebate programs increase; water use restrictions are implemented; water transfers increase
  • Water is inadequate for agriculture, wildlife, and urban needs; reservoirs are extremely low; hydropower is restricted
  • Water sanitation is a concern, reservoir levels drop significantly, surface water is nearly dry, flows are very low; water theft occurs
  • Wells and aquifer levels decrease; homeowners drill new wells
  • Wildlife encroach on developed areas; little native food and water is available for bears, which hibernate less

D4 Exceptional drought

  • Fields are left fallow; orchards are removed; vegetable yields are low; honey harvest is small
  • Fire season is very costly; number of fires and area burned are extensive
  • Fish rescue and relocation begins; pine beetle infestation occurs; forest mortality is high; wetlands dry up; survival of native plants and animals is low; fewer wildflowers bloom; wildlife death is widespread; algae blooms appear
  • Many recreational activities are affected
  • Policy change; agriculture unemployment is high, food aid is needed
  • Poor air quality affects health; greenhouse gas emissions increase as hydropower production decreases; West Nile Virus outbreaks rise
  • Water shortages are widespread; surface water is depleted; federal irrigation water deliveries are extremely low; junior water rights are curtailed; water prices are extremely high; wells are dry, more and deeper wells are drilled; water quality is poor;

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. San Luis Obispo 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 West

The Drought Monitor authors' narrative for the map of Sep 29, 2026, released Oct 1, 2026.

Outside of Arizona, New Mexico, and Colorado, which experienced deep and substantial drought-busting rainfall this past week, the western states generally had unchanging drought conditions. The Pacific Northwestern states of Washington and Oregon began experiencing the first of its fall rainy systems, helping to ease drought pressure across western Oregon, where drought was downgraded in a couple spots. Drought and dryness also improved in southwest Montana and northwest Wyoming this past week.

Looking ahead

Ongoing substantial rain was falling Tuesday morning at the onset of the new U.S. Drought Monitor week, from Arizona and New Mexico into the Central and High Plains. This excessive rainy system connected to Hurricane Polo is projected to continue eastward this week into the High Plains, Midwest, and South regions. The Weather Prediction Center has moderate threats for excessive rainfall from the Southwest into Texas, Oklahoma, northward into Nebraska and Iowa. Drought-busting rains may be possible across the South as this weather system evolves this week. Looking into the next week, the Climate Prediction Center’s 6–10-day outlook indicates that well-above average temperatures will shift into the western states, along with below normal precipitation chances. Meanwhile, above average precipitation chances are projected from southern Texas into the southeastern states, including Florida. Above average precipitation chances are also projected for southeastern Alaska, with near neutral rainfall forecasts for Hawaii.

Written by Denise Gutzmer, National Drought Mitigation Center; Jonathan Case, NASA/MSFC, UAH. 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 San Luis Obispo 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.