Your nature year
Kennewick, Washingtonthrough the year
Also for Pasco, WA, Richland, WA: the same nearby places.
When do frost, green-up and fall color come to Kennewick?
Head north for the closest of the 6 places we follow around Kennewick. For a day trip, Hanford Reach is 35 miles off; its wildflowers is Apr 1–May 15 (local timing). Mount Rainier (128 mi) is the pick for fall foliage, Sep 1–30 (local timing). Expect about 216 frost-free days in Kennewick: the last spring frost usually comes around Mar 28, the first fall one around Oct 30, going by NOAA's Kennewick station 3.7 miles away. Spring green-up reaches town around Mar 10, with first blooms around Apr 15. At some 556 feet up, Kennewick is on low ground. Statewide, Washington's fall color is usually well under way by late October.
Updated Sep 28. Sources: US Census Bureau, 2024 Gazetteer (places) ↗ (opens in a new tab), US Census Bureau, city and town population estimates, 2024 ↗ (opens in a new tab), NOAA NCEI U.S. Climate Normals 1991–2020 (annual/seasonal) ↗ (opens in a new tab)
Kennewick's year at a glance
- Frost possible
- Frost-free, ~Mar 28 to ~Oct 30
- First leaf ~Mar 10
- First bloom ~Apr 15
- Fall color under way ~Oct 28 (WA)
- Today
Near Kennewick right now
- Fall color is usually well under way by late October in WashingtonStatewide · USA-NPN volunteer observations, 2020–2025 · not a forecast~4 weeks
- First fall frost usually around Oct 30 · last spring frost around Mar 28NOAA 1991–2020 normals, Kennewick (3.7 mi, 50% dates)~5 weeks
- Mount Rainier · 128 mi · Local timing: Sep 1–30Fall foliage · in its window now
- Wildflowers · Hanford Reach · 35 miLocal timing: Apr 1–May 15~6 months
Kennewick's nature year
- Spring green-upMar
- Last spring frostMar
- Wildflowers · Hanford ReachApr–May
- Fall color (WA)Oct
- First fall frostOct
Nearby, season by season
Fall foliage
- Mount Rainier · 128 miLocal timing: Sep 1–30
- Wind River · 131 miStatewide: usually well under way by late October~4 weeks
- Mt. Hood · 139 miStatewide: usually well under way by late October~3 weeks
Wildflowers
- Hanford Reach · 35 miLocal timing: Apr 1–May 15~6 months
- Turnbull Refuge · 113 miusually May 11–20~7 months
- Mount Rainier · 128 miusually Jul 21–Aug 10~10 months
Frost and green-up
Last spring frost
Mar 28
Average (50% date)
First fall frost
Oct 30
About 216 days without frost between
Spring green-up
Mar 10
First bloom around Apr 15
Frost: NOAA 1991–2020 climate normals at Kennewick (3.7 mi from Kennewick), the day a 32 °F night is as likely as not. Green-up: the USA-NPN Spring Index, 1991–2020 average at the town.
Questions people ask
When is the first frost in Kennewick?
On average around Oct 30, and the last spring frost around Mar 28: about 216 days without frost between. These are NOAA's 1991–2020 normals at Kennewick, 3.7 miles away (the day a 32 °F night is as likely as not).
When does spring green-up reach Kennewick?
The USA-NPN Spring Index puts first leaf around Mar 10 and first bloom around Apr 15, on average for 1991–2020 at the town.
Where can I see fall foliage near Kennewick?
Mount Rainier, 128 miles (local timing: Sep 1–30); Wind River, 131 miles (statewide: usually well under way by late October); Mt. Hood, 139 miles (statewide: usually well under way by late October). Distances are straight-line.
Where can I see wildflowers near Kennewick?
Hanford Reach, 35 miles (local timing: Apr 1–May 15); Turnbull Refuge, 113 miles (usually May 11–20); Mount Rainier, 128 miles (usually Jul 21–Aug 10). Distances are straight-line.
How we know
US Census Bureau, 2024 Gazetteer (places) (opens in a new tab) (Sep 27) · US Census Bureau, city and town population estimates, 2024 (opens in a new tab) (Sep 27) · NOAA NCEI U.S. Climate Normals 1991–2020 (annual/seasonal) (opens in a new tab) (Sep 27) · USA National Phenology Network, Spring Index 1991–2020 averages (opens in a new tab) (Sep 27) · USA National Phenology Network, colored leaves observations (opens in a new tab) (Sep 28)