Frost dates for Streamwood, IL
At Streamwood, the median last spring frost (32°F) is Apr 30 and the median first fall frost is Oct 13, for a typical growing season of 163 days. For a 90% chance that the last frost has passed, wait until May 16. Nearby ZIP codes are in USDA hardiness zone 5b.
- Apr 30Last spring frost (median)50% chance of 32°F after this date
- May 16Safer planting date10% chance of 32°F after this date
- Oct 13First fall frost (median)50% chance of 32°F by this date
- 163 daysGrowing season (median)between 32°F freezes
Last spring frost dates
The chance that the temperature drops to the threshold after each date.
| Temperature | 90% chance later | 50% chance later | 10% chance later |
|---|---|---|---|
| 36°F | Apr 28 | May 12 | May 29 |
| 32°F | Apr 17 | Apr 30 | May 16 |
| 28°F | Apr 6 | Apr 20 | May 3 |
| 24°F | Mar 25 | Apr 9 | Apr 23 |
First fall frost dates
The chance that the temperature has dropped to the threshold by each date.
| Temperature | 10% chance by | 50% chance by | 90% chance by |
|---|---|---|---|
| 36°F | Sep 21 | Oct 4 | Oct 16 |
| 32°F | Sep 29 | Oct 13 | Oct 25 |
| 28°F | Oct 8 | Oct 24 | Nov 5 |
| 24°F | Oct 22 | Nov 3 | Nov 18 |
Growing season length
Days between the last spring and first fall freeze, as the length reached in 9, 5 and 1 out of 10 years.
| Temperature | 9 in 10 years at least | 5 in 10 years at least | 1 in 10 years at least |
|---|---|---|---|
| 36°F | 124 days | 143 days | 161 days |
| 32°F | 143 days | 163 days | 182 days |
| 28°F | 163 days | 184 days | 205 days |
| 24°F | 187 days | 208 days | 227 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 60107 | 5b | -15 to -10°F | 1 km |
| 60192 | 5b | -15 to -10°F | 5 km |
| 60194 | 5b | -15 to -10°F | 5 km |
| 60169 | 5b | -15 to -10°F | 6 km |
| 60103 | 5b | -15 to -10°F | 6 km |
| 60133 | 5b | -15 to -10°F | 6 km |
| 60193 | 5b | -15 to -10°F | 7 km |
| 60172 | 5b | -15 to -10°F | 9 km |
| 60173 | 5b | -15 to -10°F | 11 km |
| 60108 | 5b | -15 to -10°F | 11 km |
Not the official USDA Plant Hardiness Zone Map. Zones shown here are the values published in the USDA-ARS / Oregon State University PRISM Group 2023 ZIP code tables, shown unaltered. For the official interactive map, visit planthardiness.ars.usda.gov.
About this station
- NOAA station ID USC00118324, at 42.0256, -88.1783, elevation 250 m (819 ft).
- Data quality: Representative (10+ years), 12 years of freeze data.
- Average days per year at or below 32°F: 153.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Elgin (10 km)
- Barrington 3sw (10 km)
- West Chicago Dupage Airport (14 km)
- Chicago Ohare Intl Airport (21 km)
- Chicago Palwaukee Airport (25 km)
- Lisle-Morton Arboretum (25 km)
- Wheaton 3 SE (25 km)
- Mundelein 4 WSW (27 km)
Sources
- NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020, annual/seasonal normals by station (version 1.0.1), file dated June 27, 2023; documentation.
- USDA Agricultural Research Service and PRISM Group, Oregon State University, 2023 Plant Hardiness Zone Map ZIP code tables (CONUS, Alaska, Hawaii, Puerto Rico), files dated November 17, 2023. Data © PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed November 1, 2026. Official map: planthardiness.ars.usda.gov.
- U.S. Census Bureau, 2024 Gazetteer ZIP Code Tabulation Areas file, dated August 30, 2024 (ZIP centroids used to find the nearest station).
Freeze dates are 30-year probabilities, not forecasts. Check your local forecast before planting tender plants.