Your nature year
Gillette, Wyomingthrough the year
When do frost, green-up and fall color come to Gillette?
Spring green-up reaches town around Apr 11, with first blooms around May 20. Frost usually lets go around May 15 and comes back around Oct 1, according to NOAA's Gillette 3se station, 2.5 miles away: roughly 139 days without it.
Within 150 miles we follow 3 places, out to Wind Cave 112 miles to the southeast. The closest place we follow is Spearfish Canyon, 75 miles away, for fall foliage, September (local timing). For wildflowers, the nearest is Jewel Cave (91 mi, June to August (local timing)).
Checked against 3 official sources · How we check →
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)
Near Gillette right now
- Last spring frost usually around May 15 · first fall frost around Oct 1NOAA 1991–2020 normals, Gillette 3se (2.5 mi, 50% dates)~7 months
- In season nearby: Fall & winter wildlife1 place in its usual window now, listed belowIn season
- Wildflowers · next season nearby · 91 miLocal timing: June to August~8 months
Places near Gillette
Prairie and forest wildflowers in South DakotaNational Monument
91 mi
Season: June to AugustNational Park Service ↗
The summer bison rut in South DakotaNational park
112 mi · Also: Fall & winter wildlife · Local timing: early September through October, with the peak in early October
Usual peak: In July and AugustNational Park Service ↗
Gillette's nature year
| Month | What to see | Where |
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Gillette's year at a glance
- Frost possible
- Frost-free, ~May 15 to ~Oct 1
- First leaf ~Apr 11
- First bloom ~May 20
- Today
Frost and green-up
Last spring frost
May 15
Average (50% date)
First fall frost
Oct 1
About 139 days without frost between
Spring green-up
Apr 11
First bloom around May 20
Frost: NOAA 1991–2020 climate normals at Gillette 3se (2.5 mi from Gillette), 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 Gillette
Snow usually becomes possible around Oct 29 (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 Gillette 3se (2.5 mi away): 56 inches of snow in an average year, about 20.7 days with 1 inch or more.
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 Gillette?
On average around Oct 1, and the last spring frost around May 15: about 139 days without frost between. These are NOAA's 1991–2020 normals at Gillette 3se, 2.5 miles away (the day a 32 °F night is as likely as not).
When does spring green-up reach Gillette?
The USA-NPN Spring Index puts first leaf around Apr 11 and first bloom around May 20, on average for 1991–2020 at the town.
Where can I see fall foliage near Gillette?
The nearest is Spearfish Canyon (75 miles). Spearfish Canyon: local timing: September. Distances are straight-line.
Where can I see wildflowers near Gillette?
The nearest is Jewel Cave (91 miles). Jewel Cave: local timing: June to August. Distances are straight-line.
When does it start snowing in Gillette?
Snow usually becomes possible around Oct 29. That date is our calculation from NOAA's daily snow chances: the first day the chance of 0.1" or more of snow reaches 10%, at Gillette 3se. An average year brings 56 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)