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Your nature year

Woodstock, Illinoisthrough the year

When do frost, green-up and fall color come to Woodstock?

Leaves usually come out around Apr 10 and the first flowers around May 9. Spring takes about 4 weeks to go from leaf to bloom.

At the Crystal Lake 4nw weather station (3.9 mi), the average first fall frost is Oct 22 and the last spring frost Apr 25, which leaves Woodstock some 180 growing days. The closest place we follow is Indiana Dunes, 85 miles away, for fall foliage, usually at its best around mid-October. Indiana Dunes (85 mi) is the pick for wildflowers, Most years, the wildflowers peak from late April through mid-May (usually). Head southeast for the closest of the 3 places we follow around Woodstock. Statewide, Illinois' fall color is usually well under way by late October.

Updated Oct 2. 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)

Beyond Woodstock: Illinois all-year guide →

Near Woodstock right now

  • Fall color is usually well under way by late October in IllinoisStatewide · USA-NPN volunteer observations, 2020–2025 · not a forecast
    ~4 weeks
  • First fall frost usually around Oct 22 · last spring frost around Apr 25NOAA 1991–2020 normals, Crystal Lake 4nw (3.9 mi, 50% dates)
    ~3 weeks
  • Necedah Refuge · 149 mi · Usually: OctoberFall foliage · in its window now
    In season
  • Horicon Refuge · 88 mi · Local timing: fallWildlife by season · in its window now
    In season
  • Wildflowers · Indiana Dunes · 85 miUsually: Most years, the wildflowers peak from late April through mid-May
    ~7 months

Nearest places to Woodstock

Straight-line miles; roads are longer

Nearby, season by season

Real places within 150 miles, straight-line

Fall foliage

Spring migration

Wildflowers

  • Indiana Dunes · 85 miUsually: Most years, the wildflowers peak from late April through mid-May
    ~7 months
  • Necedah Refuge · 149 miLocal timing: June through August
    ~8 months

Wildlife by season

Woodstock's nature year

From the town's own dates and its nearest places
  • Wildflowers · Indiana DunesApr–May
  • Spring green-upApr
  • Last spring frostApr
  • Spring migration · Necedah RefugeMay
  • Wildlife by season · Horicon RefugeNowSep–Nov
  • Fall color (IL)NowOct
  • First fall frostNowOct

Woodstock's year at a glance

  • Frost possible
  • Frost-free, ~Apr 25 to ~Oct 22
  • First leaf ~Apr 10
  • First bloom ~May 9
  • Fall color under way ~Oct 27 (IL)
  • Today

Frost and green-up

Last spring frost

Apr 25

Average (50% date)

First fall frost

Oct 22

About 180 days without frost between

Spring green-up

Apr 10

First bloom around May 9

Frost: NOAA 1991–2020 climate normals at Crystal Lake 4nw (3.9 mi from Woodstock), the day a 32 °F night is as likely as not. Green-up: the USA-NPN Spring Index, 1991–2020 average at the town.

Snow in Woodstock

NOAA 1991–2020 daily normals

Snow usually becomes possible around Nov 28 (our calculation from NOAA's daily snow chances: the first day the chance of 0.1" or more of snow reaches 10%). NOAA's normals at Crystal Lake 4nw (3.9 mi away): 35 inches of snow in an average year, about 11.8 days with 1 inch or more.

0%15%30%10% lineOctDecFebApr

NOAA's chance of at least 0.1 inch of snow on each date (one value per week, September to May), averaged over 1991–2020. A typical year, not a forecast.

Questions people ask

When is the first frost in Woodstock?

On average around Oct 22, and the last spring frost around Apr 25: about 180 days without frost between. These are NOAA's 1991–2020 normals at Crystal Lake 4nw, 3.9 miles away (the day a 32 °F night is as likely as not).

When does spring green-up reach Woodstock?

The USA-NPN Spring Index puts first leaf around Apr 10 and first bloom around May 9, on average for 1991–2020 at the town.

Where can I see fall foliage near Woodstock?

Indiana Dunes, 85 miles (usually around mid-October); Necedah Refuge, 149 miles (usually: October). Distances are straight-line.

Where can I see spring migration near Woodstock?

Necedah Refuge, 149 miles (local timing: May). Distances are straight-line.

When does it start snowing in Woodstock?

Snow usually becomes possible around Nov 28: our calculation from NOAA's daily snow chances: the first day the chance of 0.1" or more of snow reaches 10%, at Crystal Lake 4nw. An average year brings 35 inches (NOAA 1991–2020). A typical year, not a forecast.Sources: NOAA NCEI U.S. Climate Normals 1991–2020 (annual/seasonal snowfall) ↗ (opens in a new tab), NOAA NCEI U.S. Climate Normals 1991–2020 (daily snowfall probabilities) ↗ (opens in a new tab)

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) (Oct 2)

All our sources and how we use them →