U.S. Frost Dates by Weather Station

NOAA station USC00265890 · Nevada

Frost Dates for Pahrump, NV

NOAA weather station Pahrump 4 NW (USC00265890), Nevada · elevation 2573 ft (784 m) · hardiness zone 8b*

  • Lower-risk planting dateafter April 21only 1 spring in 10 still has a frost later
  • Typical last frostMarch 2950% chance of a frost after it
  • Typical first fall frostNovember 350% chance of a frost before it
  • Frost-free season218 daystypical year, 32°F
  • Hardiness zone8bcalculated*

The year at a glance

Frost season at Pahrump, NVSpring: a frost after March 6 in 9 years out of 10, after March 29 in half of the years, after April 21 in 1 year out of 10. Fall: the first frost comes before October 18 in 1 year out of 10, before November 3 in half of the years, before November 17 in 9 years out of 10. Typical frost-free season: 218 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Mar 29First frost ~Nov 3Frost season at Pahrump, NVSpring: a frost after March 6 in 9 years out of 10, after March 29 in half of the years, after April 21 in 1 year out of 10. Fall: the first frost comes before October 18 in 1 year out of 10, before November 3 in half of the years, before November 17 in 9 years out of 10. Typical frost-free season: 218 days.JFMAMJJASONDLast frost ~Mar 29First frost ~Nov 3
frost likely chance fading 90% → 10% frost-free in a typical yearThe year at a glance. Blue: frost is likely; the gradient fades as the chance drops from 90% to 10%; green: the frost-free part of a typical year.

Frost dates (32°F)

Probability of frost, based on 29 years of NOAA records (1991–2020 normals)
ChanceLast frost in spring afterFirst frost in fall before
10% (unlikely)April 21October 18
50% (typical)March 29November 3
90% (likely)March 6November 17
Frost-free season (32°F, 50% chance)
218 days
Hard frost (28°F), last in spring, 50% chance after
March 6
Hard frost (28°F), first in fall, 50% chance before
November 13

The last 15 years (2006–2020 normals)

Typical last frost March 31 (2 days later than the 30-year normal), typical first fall frost November 3. Frost-free season 217 days.

A shorter, more recent NOAA period. The 30-year normals above remain the main reference: 15 years carry more year-to-year noise.

Add these dates to your calendar Yearly reminders for the typical last frost, the lower-risk planting date and the typical first fall frost (.ics).

How the chance of frost changes with the date

Spring at Pahrump: chance of a frost after this dateSpring, chance of a frost after the date: 10% April 21, 20% April 12, 30% April 7, 40% April 2, 50% March 29, 60% March 23, 70% March 18, 80% March 12, 90% March 6. Observed last spring frost in recent years: 2021 April 1, 2022 April 13, 2025 April 6.Spring: last frostChance of a frost after this date10%50%90%Mar 1Apr 1May 1Apr 21Mar 29Mar 62021: April 12022: April 132025: April 6Fall at Pahrump: chance of a frost before this dateFall, chance of a frost before the date: 10% October 18, 20% October 25, 30% October 28, 40% November 1, 50% November 3, 60% November 6, 70% November 9, 80% November 13, 90% November 17. Observed first fall frost in recent years: 2021 October 14, 2022 October 25, 2023 October 30, 2024 October 30, 2025 November 25.Fall: first frostChance of a frost before this date10%50%90%Nov 1Dec 1Oct 18Nov 3Nov 172021: October 142022: October 252023: October 302024: October 302025: November 25
Two charts, because spring and fall answer different questions: in spring, the chance that a frost still comes after a date; in fall, the chance that the first frost has already come before it. NOAA publishes these odds from 10% to 90%, so the lines stop there. ◆ marks the actual date in each recent year.

What actually happened in recent years

Observed dates of the last spring and first fall frost (32°F) at this station; ◆ marks them on the charts above
YearLast spring frostFirst fall frost
2021April 1October 14
2022April 13October 25
2023incomplete recordOctober 30
2024incomplete recordOctober 30
2025April 6November 25
2026incomplete recordseason not over yet

What these dates mean

Setting out tender crops on March 6 carries a 90% chance of a light frost, so it is a gamble for Pahrump gardeners. The cautious date that reduces that risk to 10% is April 21, when the chance of a later frost drops significantly.

The 50% dates—March 29 for spring and November 3 for fall—mark the point at which there is an even (50%) chance of a light frost occurring later (spring) or earlier (fall). For a careful schedule, the fall cautious date is October 18, when only a 10% chance of an earlier frost remains. The 50% hard-frost dates are March 6 and November 13. A hard frost at 28 °F can damage plants that survive a light frost at 32 °F, making it a more serious threat.

How to read the probabilities

The dates are probabilities from 30 years of weather, not a forecast for this year.

  • Spring: "10% after April 21" means that in about one spring out of ten a frost still happens after that date. The 90% date is the earliest: a frost after it happens in most years.
  • Fall: "10% before October 18" means that in about one fall out of ten the first frost arrives before that date.
  • 50% is the typical date: half of the years are earlier, half are later.
  • A light frost (32°F) damages tender plants; a hard frost (28°F) also stops most hardy vegetables.

Nearby weather stations

Map of weather stations near Pahrump, NVNumbered nearest stations: 1 — Mercury Desert Rock Airport, NV — 25 mi; 2 — Desert NWR, NV — 41 mi; 3 — Overton, NV — 91 mi; 4 — near Barstow, CA — 106 mi; 5 — Caliente, NV — 126 mi.CANVAZUT50 mi · 80 km1. Mercury Desert Rock Airport, NV — 25 mi12. Desert NWR, NV — 41 mi23. Overton, NV — 91 mi34. near Barstow, CA — 106 mi45. Caliente, NV — 126 mi5
  1. Mercury Desert Rock Airport, NV 25 mi (40 km)
  2. Desert NWR, NV 41 mi (65 km)
  3. Overton, NV 91 mi (147 km)
  4. near Barstow, CA 106 mi (170 km)
  5. Caliente, NV 126 mi (203 km)

Sources

* Hardiness zone 8b: zone derived from PRISM 2023 grid at the station location (not the official USDA map). Source data: PRISM Group, Oregon State University.

Station coordinates: 36.2614, -116.0564.