Photo: Ian (Wiki Ed) · CC BY-SA 4.0Okemos has colder winter nights than 80% of U.S. towns
Midsummer highs settle at about 82°. Temperatures cover 66° across the year, low to high. Summers stay cool: July afternoons here are cooler than in 79% of U.S. towns. Central heating does most of its work from November to April, in months below 50° on average.
A year in Okemos at a glance
Each month’s typical high and low, and what it brings.
What stands out about Okemos’ climate
Compared with towns across the U.S., with Okemos’ place in Michigan beside it.
What a year in Okemos feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 173 frost-free days a year
In half of years the last 32° night comes by April 28 and the first by October 17. Frost and day counts come from NOAA’s station at East Lansing 4 S, MI, 4 miles from the town’s center, at about the same height.
The 2023 USDA map puts Okemos’ center in zone 6a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −9°. 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 36 inches of snow a winter
Snow, measured at East Lansing 4 S, MI, falls mostly in January. Precipitation (rain plus melted snow) adds up to 35 inches a year; June is the wettest month and February the driest. Rain or snow falls on about 127 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Okemos
90% 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 East Lansing 4 S, MI.
Living with Okemos’ climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
173 frost-free days in zone 6a. The last frost comes by Apr 28 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 17.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August and September. 20 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Okemos from natural hazards, river flooding is the largest share (54%); heat waves, cold waves, winter storms and ice storms together are 11%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Okemos and its neighbors
Every town next door is within a degree of Okemos in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Okemos’, 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 |
|---|---|---|---|---|
| Okemos, MI | 16° | 82° | 35" | 36" |
| Pleasant Prairie, WI | 16° | 82° | 35" | 36" |
| Zion, IL | 16° | 82° | 36" | 36" |
| North Dansville, NY | 17° | 82° | 33" | 36" |
| Sayre, PA | 17° | 84° | 37" | 35" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Okemos averaged 1.4° warmer than the 1900s. The biggest change is in December (+2.9°).
A bigger shift than in 52% 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 Okemos compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Okemos’ place among Michigan’s.
Okemos weather by month
Highs, lows and precipitation from NOAA’s grid at Okemos’ center; snow, wet days and snow on the ground from East Lansing 4 S, MI. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 30° | 16° | 2.2" | 14.1" | 13 | 14° – 33° |
| February | 33° | 17° | 1.8" | 7.3" | 10 | 11° – 35° |
| March | 44° | 25° | 2.1" | 4.2" | 10 | 25° – 49° |
| April | 57° | 35° | 3.3" | 0.9" | 12 | 40° – 52° |
| May | 69° | 47° | 3.8" | 0.0" | 11 | 49° – 64° |
| June | 79° | 56° | 3.8" | 0.0" | 11 | 63° – 72° |
| July | 82° | 60° | 3.4" | 0.0" | 10 | 66° – 77° |
| August | 80° | 59° | 3.5" | 0.0" | 10 | 64° – 74° |
| September | 73° | 51° | 2.9" | 0.0" | 9 | 56° – 66° |
| October | 60° | 40° | 3.3" | 0.3" | 10 | 46° – 56° |
| November | 47° | 31° | 2.5" | 1.8" | 10 | 32° – 47° |
| December | 35° | 23° | 2.0" | 7.4" | 13 | 17° – 39° |
| Year | 58° | 38° | 34.7" | 36.0" | 127 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 11° to 35°. June is the most reliable, staying within 9°.
Where Okemos’ 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 Okemos’ center.
- Snow: East Lansing 4 S, MI.
- Frost, freezing nights, 90° and 100° days, heating and cooling: East Lansing 4 S, MI, 4 miles from the town’s center, at about the same height; 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 Okemos’ climate
What is the weather like in Okemos?
A typical July afternoon reaches 82°, a January night drops to 16°, and about 36 inches of snow falls in a normal winter. Colder January nights than 80% of U.S. towns; cooler July afternoons than 79% of U.S. towns.
How cold does it get in Okemos in winter?
January nights average 16°. About 145 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 14°.
How much snow does Okemos get?
About 36 inches in a normal winter at East Lansing 4 S, MI, most of it in January.
How hot does it get in Okemos?
July, with a typical high of 82° and a low of 60°. About 9 days a year reach 90° (East Lansing 4 S, MI).
When is the first and last frost in Okemos?
In half of years the last spring frost (32°) comes by April 28 and the first fall frost by October 17, about 173 frost-free days, at East Lansing 4 S, MI.
What growing zone is Okemos in?
Zone 6a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −9°.
What is the best time of year to visit Okemos?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, July, August and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Okemos getting warmer?
Yes: 1991–2020 averaged 1.4° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 52% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Okemos.
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.