Freeze Watch | ![]() Latest Regional Watches, Warnings, & Advisories |
|
Freeze Warning | ||
Frost Advisory |
Observed 24-Hour Low Temperatures | |
---|---|
![]() National Weather Service St. Louis |
|
Date of Most Recent Hard Freeze | Date of Most Recent Freeze |
![]() Midwest Regional Climate Center |
![]() Midwest Regional Climate Center |
Forecast Low Temperatures Day 1 | |
---|---|
![]() National Weather Service St. Louis |
|
Forecast Low Temperatures Day 2 | Forecast Low Temperatures Day 3 |
![]() National Weather Service St. Louis |
![]() National Weather Service St. Louis |
Forecast Low Temperatures Day 4 | Forecast Low Temperatures Day 5 |
![]() National Weather Service St. Louis |
![]() National Weather Service St. Louis |
Forecast Low Temperatures Day 6 | Forecast Low Temperatures Day 7 |
![]() National Weather Service St. Louis |
![]() National Weather Service St. Louis |
6–10 Day Temperature Outlook | 8–14 Day Temperature Outlook |
![]() Climate Prediction Center |
![]() Climate Prediction Center |
Last Hard Freeze (≤28ºF) | Last Freeze (≤32ºF) | Last Frost (≤36ºF) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Location | ID | Type | State | Earliest | Median | Average | Latest | Earliest | Median | Average | Latest | Earliest | Median | Average | Latest |
St. Louis | KSTL | ASOS | MO | 2/29 | 3/26 | 3/20 | 4/9 | 3/9 | 4/2 | 4/2 | 4/18 | 3/22 | 4/12 | 4/11 | 4/29 |
Columbia | KCOU | ASOS | MO | 3/5 | 3/29 | 3/29 | 4/18 | 3/10 | 4/8 | 4/8 | 4/29 | 4/5 | 4/22 | 4/22 | 5/18 |
Quincy | KUIN | ASOS | IL | 3/5 | 4/1 | 4/1 | 4/20 | 3/24 | 4/11 | 4/12 | 5/3 | 4/12 | 4/28 | 4/28 | 5/18 |
Chesterfield | KSUS | ASOS | MO | 3/6 | 4/1 | 3/31 | 4/20 | 3/16 | 4/11 | 4/11 | 5/6 | 4/1 | 4/23 | 4/24 | 5/17 |
Cahokia* | KCPS | ASOS | IL | 3/5 | 3/26 | 3/24 | 4/17 | 3/10 | 4/9 | 4/8 | 4/29 | 3/30 | 4/21 | 4/22 | 5/9 |
St. Charles* | KSET | ASOS | MO | 3/6 | 3/24 | 3/24 | 4/9 | 3/19 | 4/10 | 4/8 | 4/23 | 3/22 | 4/18 | 4/20 | 5/9 |
Jefferson City* | KJEF | ASOS | MO | 3/5 | 3/24 | 3/24 | 4/17 | 3/15 | 4/12 | 4/10 | 4/29 | 4/7 | 4/23 | 4/24 | 5/17 |
Farmington* | KFAM | ASOS | MO | 3/10 | 4/2 | 4/4 | 4/28 | 3/26 | 4/10 | 4/13 | 5/7 | 4/6 | 4/23 | 4/23 | 5/16 |
Belleville SIU Res. | SIUI2 | COOP | IL | 3/10 | 3/31 | 4/1 | 4/28 | 3/19 | 4/11 | 4/10 | 4/29 | 3/23 | 4/24 | 4/26 | 5/18 |
Hillsboro* | HLBI2 | COOP | IL | 3/5 | 3/30 | 3/29 | 4/15 | 3/20 | 4/12 | 4/9 | 4/29 | 4/1 | 4/23 | 4/25 | 5/18 |
Jerseyville | JVLI2 | COOP | IL | 3/19 | 4/3 | 4/4 | 4/20 | 3/23 | 4/13 | 4/13 | 5/6 | 4/1 | 4/27 | 4/27 | 5/20 |
Ramsey | RAMI2 | COOP | IL | 3/17 | 4/3 | 4/4 | 4/18 | 3/28 | 4/14 | 4/14 | 5/5 | 3/31 | 4/25 | 4/28 | 5/27 |
Salem | SLOI2 | COOP | IL | 3/7 | 3/29 | 3/27 | 4/18 | 3/10 | 4/9 | 4/7 | 4/28 | 3/31 | 4/20 | 4/21 | 5/18 |
White Hall | WHLI2 | COOP | IL | 3/6 | 4/3 | 4/1 | 4/20 | 3/23 | 4/13 | 4/12 | 5/4 | 3/31 | 4/23 | 4/25 | 5/18 |
California | CALM7 | COOP | MO | 3/5 | 4/4 | 4/1 | 4/20 | 3/16 | 4/9 | 4/9 | 5/4 | 4/7 | 4/21 | 4/23 | 5/18 |
Elsberry | EBYM7 | COOP | MO | 3/5 | 4/5 | 4/3 | 4/20 | 3/27 | 4/18 | 4/18 | 5/21 | 4/14 | 4/27 | 4/29 | 5/21 |
Hannibal WP | HNNM7 | COOP | MO | 3/6 | 3/29 | 3/30 | 4/17 | 3/10 | 4/10 | 4/11 | 5/3 | 3/30 | 4/16 | 4/18 | 5/5 |
Jefferson City WP | JWPM7 | COOP | MO | 3/3 | 3/25 | 3/24 | 4/15 | 3/10 | 4/5 | 4/4 | 4/21 | 3/17 | 4/16 | 4/17 | 5/7 |
Rosebud* | RSEM7 | COOP | MO | 3/16 | 4/12 | 4/11 | 5/4 | 4/3 | 4/23 | 4/25 | 5/18 | 4/20 | 5/8 | 5/7 | 5/22 |
Based on 1991–2020 climatological data. *More than 5 years with seasons including more than 5 days with missing data—use with caution. |
Hard Freeze (≤28ºF) | ||
---|---|---|
Earliest | Median | Latest |
![]() Midwest Regional Climate Center |
![]() Midwest Regional Climate Center |
![]() Midwest Regional Climate Center |
Freeze (≤32ºF) | ||
Earliest | Median | Latest |
![]() Midwest Regional Climate Center |
![]() Midwest Regional Climate Center |
![]() Midwest Regional Climate Center |
First Hard Freeze (≤28ºF) | First Freeze (≤32ºF) | First Frost (≤36ºF) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Location | ID | Type | State | Earliest | Median | Average | Latest | Earliest | Median | Average | Latest | Earliest | Median | Average | Latest |
St. Louis | KSTL | ASOS | MO | 11/1 | 11/15 | 11/15 | 12/9 | 10/7 | 11/1 | 11/2 | 11/27 | 10/7 | 10/21 | 10/23 | 11/13 |
Columbia | KCOU | ASOS | MO | 10/7 | 11/1 | 11/3 | 11/8 | 10/7 | 10/22 | 10/23 | 11/20 | 9/19 | 10/13 | 10/14 | 11/10 |
Quincy | KUIN | ASOS | IL | 10/7 | 10/31 | 10/31 | 11/26 | 10/2 | 10/19 | 10/20 | 11/12 | 9/19 | 10/11 | 10/11 | 10/30 |
Chesterfield | KSUS | ASOS | MO | 10/9 | 10/31 | 10/31 | 11/22 | 9/23 | 10/21 | 10/19 | 11/10 | 9/21 | 10/7 | 10/9 | 10/28 |
Cahokia* | KCPS | ASOS | IL | 10/9 | 11/1 | 11/2 | 11/27 | 10/5 | 10/21 | 10/21 | 11/12 | 9/25 | 10/12 | 10/12 | 11/10 |
St. Charles* | KSET | ASOS | MO | 10/16 | 11/2 | 11/6 | 12/3 | 10/2 | 10/18 | 10/22 | 11/10 | 9/22 | 10/11 | 10/11 | 10/30 |
Jefferson City* | KJEF | ASOS | MO | 10/9 | 11/1 | 11/2 | 11/27 | 10/7 | 10/26 | 10/23 | 11/10 | 9/29 | 10/13 | 10/14 | 10/30 |
Farmington* | KFAM | ASOS | MO | 9/22 | 10/28 | 10/26 | 11/25 | 9/22 | 10/21 | 10/18 | 11/5 | 9/21 | 10/8 | 10/9 | 10/28 |
Belleville SIU Res. | SIUI2 | COOP | IL | 9/23 | 10/27 | 10/26 | 11/25 | 9/20 | 10/14 | 10/14 | 11/10 | 9/19 | 10/9 | 10/8 | 11/6 |
Hillsboro* | HLBI2 | COOP | IL | 10/16 | 11/3 | 11/6 | 12/9 | 9/21 | 10/18 | 10/18 | 11/11 | 9/19 | 10/12 | 10/12 | 11/10 |
Jerseyville | JVLI2 | COOP | IL | 10/5 | 10/29 | 10/28 | 11/17 | 9/21 | 10/17 | 10/16 | 11/10 | 9/15 | 10/10 | 10/7 | 10/27 |
Ramsey | RAMI2 | COOP | IL | 9/23 | 10/28 | 10/27 | 11/25 | 9/20 | 10/13 | 10/14 | 11/10 | 9/15 | 10/6 | 10/6 | 10/26 |
Salem | SLOI2 | COOP | IL | 10/16 | 11/4 | 11/6 | 12/4 | 10/7 | 10/26 | 10/25 | 11/13 | 9/21 | 10/14 | 10/14 | 11/10 |
White Hall | WHLI2 | COOP | IL | 10/12 | 10/28 | 10/28 | 11/25 | 10/5 | 10/17 | 10/18 | 11/10 | 9/20 | 10/9 | 10/9 | 10/25 |
California | CALM7 | COOP | MO | 10/9 | 11/1 | 11/3 | 11/27 | 10/7 | 10/26 | 10/23 | 11/13 | 9/19 | 10/16 | 10/16 | 11/10 |
Elsberry | EBYM7 | COOP | MO | 10/9 | 10/31 | 10/30 | 11/16 | 9/23 | 10/17 | 10/16 | 10/31 | 9/20 | 10/10 | 10/8 | 10/29 |
Hannibal WP | HNNM7 | COOP | MO | 10/7 | 11/3 | 11/6 | 11/29 | 9/29 | 10/28 | 10/27 | 11/22 | 9/9 | 10/13 | 10/12 | 11/4 |
Jefferson City WP | JWPM7 | COOP | MO | 10/24 | 11/8 | 11/11 | 12/9 | 10/7 | 10/28 | 10/27 | 11/13 | 9/22 | 10/17 | 10/17 | 11/10 |
Rosebud* | RSEM7 | COOP | MO | 10/5 | 10/26 | 10/24 | 11/10 | 9/23 | 10/13 | 10/12 | 11/6 | 9/15 | 10/4 | 10/3 | 10/17 |
Based on 1991–2020 climatological data. *More than 5 years with seasons including more than 5 days with missing data—use with caution. |
Hard Freeze (≤28ºF) | ||
---|---|---|
Earliest | Median | Latest |
![]() Midwest Regional Climate Center |
![]() Midwest Regional Climate Center |
![]() Midwest Regional Climate Center |
Freeze (≤32ºF) | ||
Earliest | Median | Latest |
![]() Midwest Regional Climate Center |
![]() Midwest Regional Climate Center |
![]() Midwest Regional Climate Center |
Frost | Thin ice that forms on surfaces when the temperature falls to or below 32ºF and sufficient moisture is available, which can damage many seasonal plants and kill some sensitive seasonal plants during prolonged exposure. Conventional temperature measurements above the surface often only need to be at or below 36ºF for frost to form. |
---|---|
Freeze | When the temperature falls to or below 32ºF, which can significantly damage nearly all seasonal plants and even kill many seasonal plants during prolonged exposure. A freeze can occur without the development of frost. |
Hard Freeze | When the temperature falls to or below 28ºF, which can kill nearly all seasonal plants. A hard freeze can occur without the development of frost. |