Weather in Warren, Michigan
Roses open along the stoops. Day 58 of spring. Read this microseason across nine climate regions →
- TodayMay 16Light Drizzle28%80°54°
- SundayMay 17Overcast18%87°63°
- MondayMay 18Light Drizzle20%88°67°
- TuesdayMay 19Showers74%88°68°
- WednesdayMay 20Drizzle58%71°47°
- ThursdayMay 21Overcast—61°44°
- FridayMay 22Light Drizzle12%64°48°
- PM 2.5
- 7.3 μg/m³
- PM 10
- 8.7 μg/m³
- NO₂
- 4.9 μg/m³
- Ozone
- 127.0 μg/m³
- UV Index
- 0.5 Low
Flowers blooming in late autumn, a sure sign of a bad winter coming.
- Moonrise
- 9:29 AM
- Moonset
- 12:00 AM
- In sign
- ♉︎ Taurus
Roses open along the stoops
Warren at a glance
- Today vs. normal: 10°F above the seasonal normal for this latitude
- Last frost: May 1 (climatological average for this latitude)
- Microseason: 28 of 72, May 16–20
- Planting window: Direct sow okra, melons, and southern peas. Thin carrot rows.
Right now in the garden
Cool-season window is open
As of May 16, the cool-season window is open or about to open. Direct-sow peas, lettuce, spinach, radishes, and brassicas now. Hold off on warm-season crops until 1–2 weeks after the last spring frost (around May).
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
July is Warren's warmest month, with a mean near 74°F, and January is the coldest at about 26°F. Rainfall reaches its high point in May at 3.7 inches and drops to its low in February at 2.1 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 26° | 2.1″ | 7 |
| February | 28° | 2.1″ | 7 |
| March | 37° | 2.5″ | 8 |
| April | 48° | 3.2″ | 11 |
| May | 59° | 3.7″ | 12 |
| June | 69° | 3.7″ | 12 |
| July | 74° | 3.4″ | 11 |
| August | 72° | 3.5″ | 12 |
| September | 65° | 3.0″ | 10 |
| October | 53° | 2.8″ | 9 |
| November | 41° | 2.6″ | 9 |
| December | 31° | 2.4″ | 8 |
Regional context
Warren belongs to a warm-summer humid continental climate region, a grouping that shares similar temperature ranges, seasonal patterns, and growing conditions with neighboring cities.
Similar climates: Detroit, MI, Grand Rapids, MI, Lansing, MI, Ann Arbor, MI, Flint, MI.
Naturalist notes
By late May, common milkweed has pushed up enough for monarch butterflies to lay eggs on the undersides of young leaves.
The waxing crescent moon of early June hangs low in the western sky after sunset, its terminator just sharp enough to reveal crater rims through binoculars.
Frequently asked
- When does it freeze in Warren?
- The last spring frost in Warren usually occurs around mid-May, and the first fall frost typically hits around mid-October.
- What is the rainy season in Warren?
- May brings the most rain, averaging about 3.7 inches; the city receives roughly 35 inches per year.
- What is the warmest month in Warren?
- July is normally the warmest month, averaging about 74°F.
- What is the coldest month in Warren?
- January is normally the coldest month, averaging about 26°F.
- When can I start a vegetable garden in Warren?
- Cool-season crops like peas and lettuce can be sown near the date of the last spring frost in mid-May; warm-season crops such as tomatoes and peppers should wait until one to two weeks past that date.
- How many rainy days does Warren get?
- Warren sees about 116 rainy days in an average year.
- What hardiness zone is Warren?
- The USDA hardiness zone for Warren is based on the lowest average winter temperature; the current zone can be confirmed by looking up the city ZIP code through the USDA's online tool.
Climate
Warren, Michigan falls within a warm-summer humid continental climate zone. Average temperatures swing from 26°F in January to 74°F in July — a 48°F range between winter and summer.
Precipitation totals roughly 35 inches per year, spread across about 116 rainy days.
Latitude (42.5°N), the influence of nearby large water bodies, and local elevation together set the seasonal rhythm. Those factors determine what can be grown, when frost is likely, and how daily weather unfolds.