Photo: Jeffrey Beall · CC BY-SA 4.0Precipitation in Sedgwick trails that of 91% of U.S. towns: 17 inches a year
Midwinter brings lows of about 15°. Winter nights are cold: in January they are colder than in 85% of U.S. towns. Warming shows here too: 1.4° more than in 1901–2000, led by March. Seedlings are safe outdoors from about May 6, with the first autumn frost due around October 7.
A year in Sedgwick at a glance
Each month’s typical high and low, and what it brings.
What stands out about Sedgwick’s climate
Compared with towns across the U.S., with Sedgwick’s place in Colorado beside it.
What a year in Sedgwick feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 152 frost-free days a year
In half of years the last 32° night comes by May 6 and the first by October 7. Frost and day counts come from NOAA’s station at Sedgwick 5 S, CO, 5 miles from the town’s center, 410 ft higher.
The 2023 USDA map puts Sedgwick’s center in zone 5b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −13°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 31 inches of snow a winter
Snow, measured at Sedgwick 5 S, CO, falls mostly in February. Precipitation (rain plus melted snow) adds up to 17 inches a year; June is the wettest month and January the driest. Rain or snow falls on about 68 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Sedgwick
89% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Sedgwick 5 S, CO.
Living with Sedgwick’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
152 frost-free days in zone 5b. The last frost comes by May 6 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 7.
Months with highs of 62–84° and lows of 40° or more: May, June and September.
Parks & trails →Of the yearly building losses FEMA expects in Sedgwick from natural hazards, drought is the largest share (40%); heat waves, cold waves, winter storms and ice storms together are 12%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Sedgwick and similar climates
TownRatings has no climate map of the towns around Sedgwick yet.
Climates most like Sedgwick’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Sedgwick, CO | 15° | 91° | 17" | 31" |
| Nephi, UT | 17° | 91° | 14" | 32" |
| Spring Creek, NV | 15° | 89° | 14" | 41" |
| Sheridan, WY | 11° | 89° | 15" | 33" |
| Belle Fourche, SD | 13° | 88° | 19" | 42" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Sedgwick averaged 1.4° warmer than the 1900s. The biggest change is in March (+3.5°).
A smaller shift than in 50% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Sedgwick compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Sedgwick’s place among Colorado’s.
Sedgwick weather by month
Highs, lows and precipitation from NOAA’s grid at Sedgwick’s center; snow, wet days and snow on the ground from Sedgwick 5 S, CO. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 42° | 15° | 0.3" | 4.1" | 3 | 10 | 19° – 37° |
| February | 45° | 17° | 0.4" | 6.1" | 4 | 9 | 21° – 39° |
| March | 55° | 26° | 0.9" | 5.1" | 5 | 4 | 32° – 50° |
| April | 63° | 34° | 1.9" | 4.6" | 7 | 2 | 42° – 54° |
| May | 72° | 45° | 2.8" | 0.4" | 9 | 0 | 52° – 63° |
| June | 84° | 54° | 3.0" | 0.0" | 9 | 0 | 65° – 76° |
| July | 91° | 61° | 2.5" | 0.0" | 7 | 0 | 70° – 80° |
| August | 88° | 58° | 2.2" | 0.0" | 7 | 0 | 68° – 78° |
| September | 80° | 49° | 1.4" | 0.2" | 5 | 0 | 58° – 69° |
| October | 66° | 35° | 1.3" | 2.5" | 6 | 2 | 41° – 56° |
| November | 52° | 24° | 0.5" | 3.6" | 3 | 3 | 29° – 45° |
| December | 42° | 15° | 0.4" | 4.8" | 3 | 10 | 20° – 34° |
| Year | 65° | 36° | 17.4" | 31.4" | 68 | 41 |
How much a month can swing
A normal is an average. January swings the most: from 1991 to 2020 its average ranged from 19° to 37°. August is the most reliable, staying within 10°.
Where Sedgwick’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Sedgwick’s center.
- Snow: Sedgwick 5 S, CO.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Sedgwick 5 S, CO, 5 miles from the town’s center, 410 ft higher; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Sedgwick’s climate
What is the weather like in Sedgwick?
A typical July afternoon reaches 91°, a January night drops to 15°, and about 31 inches of snow falls in a normal winter. Colder January nights than 85% of U.S. towns; hotter July afternoons than 80% of U.S. towns.
How cold does it get in Sedgwick in winter?
January nights average 15°. About 157 nights a year reach 32° or below and 8 reach 0° or below. In the coldest January of the last 30 years the month averaged 19°.
How much snow does Sedgwick get?
About 31 inches in a normal winter at Sedgwick 5 S, CO, most of it in February, with snow on the ground about 41 days a year.
How hot does it get in Sedgwick?
July, with a typical high of 91° and a low of 61°. About 49 days a year reach 90° and 7 reach 100° (Sedgwick 5 S, CO).
When is the first and last frost in Sedgwick?
In half of years the last spring frost (32°) comes by May 6 and the first fall frost by October 7, about 152 frost-free days, at Sedgwick 5 S, CO.
What growing zone is Sedgwick in?
Zone 5b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −13°.
What is the best time of year to visit Sedgwick?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Sedgwick getting warmer?
Yes: 1991–2020 averaged 1.4° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 50% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Sedgwick.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.