Okemos, Michigan Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Okemos weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Rain77%0.08″85°69°—
- SundayJul 5Light Drizzle43%0.02″81°69°-4°
- MondayJul 6Overcast——75°60°-6°
- TuesdayJul 7Partly Cloudy——81°58°+6°
- WednesdayJul 8Overcast——81°59°0°
- ThursdayJul 9Light Drizzle30%0.01″74°64°-7°
- FridayJul 10Overcast24%—81°63°+7°
AQI 42 (Good), driven by PM2.5. AQI down 22 over the last 6 hours — air quality is improving sharply. PM2.5 at 9.7 µg/m³, PM10 at 10.3 µg/m³ — typical background levels with no transport signature.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 34 now. With UV 3.3 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 11 around 1 PM.
- Present
- AQI 34
- UV peak
- 3.3 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 11
PM × Wind × Precip
PM2.5 at 9.7 µg/m³, PM10 at 10.3 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.94
- Wind
- light
- Recent rain
- 1h in last 6h
- Pattern
- background
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).








































If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:36 PM
- Moonset
- 10:39 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Okemos at a glance
- Today vs. normal: 69°F — typical for the season
- Last frost: May 2 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 48864
15-Day Forecast — Okemos
- Sat84°67°77%
- Sun81°69°43%
- Mon75°60°7%
- Tue81°58°4%
- Wed81°59°9%
- Thu74°64°30%
- Fri81°63°24%
- Sat81°61°22%
- Sun77°61°15%
- Mon83°60°17%
- Tue71°61°9%
- Wed79°57°16%
- Thu81°58°48%
- Fri82°64°34%
- Sat75°59°17%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Okemos
SPC includes Okemos in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
Microseason · July 1–5
Cicadas claim the afternoon
Annual cicada buzz begins, peaking in the heat of the day.
Day 185 of 365 · Wedge 37 of 72
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | — | — |
| May | lettuce, peas, spinach, radishes | lettuce, peas, radishes |
| June | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | tomatoes, peppers, beans, squash, fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | — | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
In Okemos, July runs warmest near 72°F and January coldest around 24°F, while June is the wettest month (3.8 inches) and February the driest (1.7 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 24° | 2.1″ | 5 |
| February | 26° | 1.7″ | 5 |
| March | 35° | 2.1″ | 6 |
| April | 47° | 3.3″ | 8 |
| May | 58° | 3.7″ | 7 |
| June | 68° | 3.8″ | 6 |
| July | 72° | 2.9″ | 6 |
| August | 70° | 3.5″ | 6 |
| September | 63° | 2.8″ | 5 |
| October | 51° | 3.2″ | 7 |
| November | 40° | 2.5″ | 5 |
| December | 30° | 1.9″ | 5 |
Regional context
Per NOAA NCEI 1991-2020 normals, Okemos runs from a 24°F January mean to 72°F in July, a 48°F seasonal spread, with near 33.3 inches of precipitation across about 71 wet days.
Okemos's rain peaks in summer: June brings 3.8 inches over 6.2 thunderstorm-fed days, while February sees just 1.7 inches across 4.6 days under cooler, drier air. It is a warm-season-wet pattern Okemos shares with places like Haslett, MI, East Lansing, MI and Williamston, MI.
Okemos reaches its last hard frost near late-May; that is the cue for kale, peas, spinach, and parsnips. Tomatoes and peppers do best set out two weeks later in Okemos, once nights clear the mid-40s°F. The season ends by early-October in Okemos, once hard frosts set back in. Okemos's low ground holds frost later into spring than Okemos's benches, which run 3-5 days ahead.
Similar climates: Haslett, MI, East Lansing, MI, Williamston, MI, Holt, MI, Lansing, MI.
Frequently asked
- When does it freeze in Okemos?
- Okemos's last spring frost lands near mid-May, and in Okemos the first fall frost follows around mid-October.
- What is the rainy season in Okemos?
- Okemos sees its heaviest rain in June (around 3.8 inches), part of roughly 33 inches a year.
- What is the warmest month in Okemos?
- July is Okemos's warmest month, averaging about 72°F.
- What is the coldest month in Okemos?
- Okemos bottoms out in January, with a mean near 24°F.
- When can I start a vegetable garden in Okemos?
- Frost-hardy sowings begin at mid-May in Okemos; warm-season starts follow two weeks on.
- How many rainy days does Okemos get?
- Expect roughly 71 wet days a year in Okemos.
- What hardiness zone is Okemos?
- Okemos's hardiness zone tracks its winter low; with January near 24°F, check the USDA ZIP map for the exact zone.
- What is the 10-day forecast for Okemos?
- Okemos's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Okemos?
- See this week's day-by-day rain chances for Okemos in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Okemos?
- Current conditions for Okemos and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Okemos forecast updated?
- The Okemos forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Okemos?
- Today's sunrise and sunset times for Okemos are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Okemos?
- The next few days in Okemos's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
Okemos, Michigan occupies a warm-summer humid continental zone, with January means near 24°F and July around 72°F — a 48°F swing.
Yearly precipitation in Okemos totals around 33 inches, spread over about 71 days of rain or snow.
The 48°F gap between Okemos's summer and winter, at 42.7°N, shapes Okemos's frost calendar.
ZIP codes in Okemos
- 48864
- 48805