Late August · Extreme heat Critical

Nevada lawn conditions

Updated

Extreme heat through Sunday midday—NWS Las Vegas / Northwest Desert-class highs near ~110 Sunday / ~107 Monday / ~106 Tuesday under Extreme Heat Warning themes through Sunday evening Aug 23 for many Lake Mead / Las Vegas Valley / Northwest Desert zones; survival irrigation only on assigned days; hold fertilizer and most herbicides.

Do this week

  1. Water deep on assigned days only—check drought stage before adding minutes.
  2. Mow higher with sharp blades; avoid midday traffic on heat-stressed turf.
  3. Skip fertilizer and most herbicides until stress eases.
  4. Audit irrigation for runoff, misting, and dry spots after each cycle.

Watch for

  • Tip burn from salts or recycled water
  • Localized dry spot / hydrophobic thatch circles
  • Grubs or billbugs under irregular wilt
  • Monsoon-related fungal flare where nights stay humid
Regional notes & context

Why this week

Peak summer in Nevada is about keeping crowns alive under high evaporative demand—not chasing emerald color. NWS heat-dome patterns still favor widespread near-/above-100 °F from Texas into the Southwest through Sunday midday into late week (Dallas-class highs near ~107 Sunday / ~107 Monday / ~106 Tuesday with Extreme Heat Warning themes active through Sunday evening Aug 23 for many North Texas counties—South Texas Corpus Christi-class Heat Advisories remain active through Sunday evening Aug 23 while Brownsville-class Heat Advisories are expired this midday; Austin-class Extreme Heat Warning themes run through Sunday evening Aug 23 before Heat Advisories continue through Wednesday evening Aug 26 with highs near ~105/~104/~105; San Antonio-class Heat Advisories continue through Wednesday evening Aug 26 with highs near ~104/~102/~103; Houston-class Heat Advisories continue through Monday evening Aug 24 with highs near ~101/~100/~103; El Paso-class Heat Advisories remain expired this midday with highs near ~101 Sunday / ~104 Monday / ~102 Tuesday; Phoenix-class highs sit near ~115 Sunday / ~108 Monday / ~112 Tuesday under valley Extreme Heat Warning themes through Saturday evening Aug 29; Tucson-class Extreme Heat Warning themes also run through Saturday evening Aug 29 with highs near ~110/~104/~108; lower Colorado / Yuma / Imperial / Chuckwalla Extreme Heat Warning themes continue through Saturday evening Aug 29 with Yuma-class highs near ~113/~111/~114; Coachella / Palm Springs-class highs near ~116 Sunday / ~111 Monday / ~111 Tuesday under Coachella / San Diego County Deserts Extreme Heat Warnings through Friday evening Aug 28; Las Vegas / Northwest Desert-class ~110 Sunday / ~107 Monday / ~106 Tuesday under Extreme Heat Warning themes through Sunday evening Aug 23 for Lake Mead / Las Vegas Valley / Northwest Desert zones; Salt Lake-class ~96 Sunday / ~96 Monday / ~95 Tuesday with metro Heat Advisories expired; Fresno / Central Valley-class ~104 Sunday / ~106 Monday / ~106 Tuesday with Extreme Heat Warning themes expired but Inland Empire / LA-basin Heat Advisories active through Tuesday morning Aug 25 and Extreme Heat Watches through Friday evening Aug 28; Albuquerque-class ~97 Sunday / ~98 Monday / ~98 Tuesday after metro Heat Advisories expired); NHC Atlantic Tropical Weather Outlook (800 AM EDT Sun Aug 23): Northeastern Atlantic non-tropical low west of Portugal has formation chances low ~10% in 48 hours and low ~10% through 7 days (further development not expected after tonight); Central Subtropical Atlantic disturbance AL95 several hundred miles southeast of Bermuda has low ~20% in 48 hours and low ~30% through 7 days (slow development possible while drifting west/northwest then accelerating north early this week); Eastern Tropical Atlantic wave expected to move off Africa Monday has near 0% in 48 hours and medium ~50% through 7 days (a tropical depression could form by mid-to-late week while moving generally west at 15–20 mph); SE Texas stays hot with Houston-class Heat Advisories through Monday evening, expanding Plains drought, and watering restrictions make calendar watering risky. Without a reliable leach rain, soluble salts and specific ions concentrate in the top inch.

Seasonal notes

  • Flush salts only when your water rules allow and turf can use the water.
  • Coastal vs inland microclimates differ sharply—follow your district first.
  • Warm-season species usually handle heat better than leftover cool-season pockets.

Last updated

Content refreshed August 23, 2026 (Sunday midday) for Nevada. Educational orientation only—not a site-specific diagnosis.