Your nature year
Maricopa, Arizonathrough the year
When do frost, green-up and fall color come to Maricopa?
Expect about 274 frost-free days in Maricopa: the last spring frost usually comes around Feb 23, the first fall one around Nov 24, going by NOAA's Maricopa 4 N station 5.3 miles away. At some 1,196 feet up, Maricopa is on higher ground than most towns in the region.
The USA-NPN spring index puts first leaf here around Jan 25 and first bloom around Feb 17. About 3 weeks pass between first leaf and first bloom here. We follow 3 places within 150 miles of Maricopa; the nearest lies 72 miles to the southeast. The closest place we follow is Saguaro, 72 miles away, for wildflowers, often best mid-late March (local timing). Bill Williams River Refuge (149 mi) is the pick for spring migration, late April to early May (local timing). Statewide, Arizona's fall color is usually well under way by late October.
Updated Sep 29. 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)
Maricopa's year at a glance
- Frost possible
- Frost-free, ~Feb 23 to ~Nov 24
- First leaf ~Jan 25
- First bloom ~Feb 17
- Fall color under way ~Oct 30 (AZ)
- Today
Near Maricopa right now
- Fall color is usually well under way by late October in ArizonaStatewide · USA-NPN volunteer observations, 2020–2025 · not a forecast~4 weeks
- First fall frost usually around Nov 24 · last spring frost around Feb 23NOAA 1991–2020 normals, Maricopa 4 N (5.3 mi, 50% dates)~8 weeks
- Wildflowers · Saguaro · 72 miLocal timing: often best mid-late March~5 months
Maricopa's nature year
- Jan: Spring green-upJan
- Feb: Last spring frostFeb
- Mar: Wildflowers · SaguaroMar
- Spring migration · Bill Williams River RefugeApr–May
- Oct: Fall color (AZ)Oct
- Nov: First fall frostNov
Nearby, season by season
Spring migration
- Bill Williams River Refuge · 149 miLocal timing: late April to early May~7 months
Wildflowers
- Saguaro · 72 miLocal timing: often best mid-late March~5 months
- Organ Pipe Cactus · 88 miLocal timing: between February and April~4 months
Frost and green-up
Last spring frost
Feb 23
Average (50% date)
First fall frost
Nov 24
About 274 days without frost between
Spring green-up
Jan 25
First bloom around Feb 17
Frost: NOAA 1991–2020 climate normals at Maricopa 4 N (5.3 mi from Maricopa), 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 Maricopa?
On average around Nov 24, and the last spring frost around Feb 23: about 274 days without frost between. These are NOAA's 1991–2020 normals at Maricopa 4 N, 5.3 miles away (the day a 32 °F night is as likely as not).
When does spring green-up reach Maricopa?
The USA-NPN Spring Index puts first leaf around Jan 25 and first bloom around Feb 17, on average for 1991–2020 at the town.
Where can I see spring migration near Maricopa?
Bill Williams River Refuge, 149 miles (local timing: late April to early May). Distances are straight-line.
Where can I see wildflowers near Maricopa?
Saguaro, 72 miles (local timing: often best mid-late March); Organ Pipe Cactus, 88 miles (local timing: between February and April). 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 29)