Dearborn, MI weather in May
May in Dearborn: mild, with frequent rain. Highs 70°F, lows 48°F, about 13 wet days.
- Normal high
- 70°F
- Normal low
- 48°F
- Wet days
- 13
- 3.7 in total
- Muggy days
- 1
- dew point 65°F+
How May changes from start to finish
| May 1 | May 31 | |
|---|---|---|
| Normal high | 65°F | 75°F |
| Normal low | 43°F | 53°F |
| Chance of a wet day | 42% | 39% |
| Sunrise / sunset | 6:27 am / 8:31 pm | 5:59 am / 9:01 pm |
| Daylight | 14.1 h | 15.1 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).
A typical May day
- 6 am53°Fdew point 45°F
- 9 am60°Fdew point 46°F
- Noon65°Fdew point 47°F
- 3 pm67°Fdew point 47°F
- 6 pm65°Fdew point 46°F
- 9 pm60°Fdew point 46°F
NOAA hourly normals (local standard time) from Detroit City Airport (10 mi away); average wind 9 mph; clear or few clouds in 47% of daytime hours, mostly cloudy or overcast in 41%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F16 of 31
- Hot dayshigh 90°F or more1 of 31
- Muggy daysdaily mean dew point 65°F or more1 of 31
- Wet daysat least 0.01 in of rain or melted snow13 of 31
- Notable rainat least 0.10 in8 of 31
- Freezing nightslow 32°F or below1 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per May, counted from daily records for each year 1991-2020.
Rain in May
Normal precipitation is 3.7 in; a dry May brings about 2.3 in and a wet one about 5.1 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How May varies from year to year
- Warmest May, 1991-20201998: average high 78°F
- Coolest May1997: average high 64°F
- Wettest May2004: 8.5 in
- Driest May1994: 1.2 in
- Highest reading95°F (May 29, 2006)
- Lowest reading25°F (May 13, 1996)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
May compared with April and June
| April | May | June | |
|---|---|---|---|
| Normal high | 58°F | 70°F | 79°F |
| Normal low | 37°F | 48°F | 58°F |
| Wet days | 13 | 13 | 11 |
| Comfortable days | 9 | 16 | 11 |
| Daylight | 13.4 h | 14.6 h | 15.2 h |
Highs change by +12°F from April and +9°F into June.
Nearby alternatives in May
- Warmer: Cincinnati, OH233 mi · high 75°F · 14 wet days
How Dearborn ranks in May
- Normal high268th warmest of 378 cities; 2nd of 8 in Michigan
- Wet days329th driest of 378
- Comfortable days51st most of 339
What to pack for Dearborn in May
- A rain jacket or umbrella – rain on about 13 days
Frost in May
The last spring frost typically comes around May 1; in 1 year in 10 it comes after May 18. All frost dates for Dearborn.
Heating and cooling
May has 233 heating degree days and 39 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.
Questions
How hot is Dearborn in May?
The normal high is 70°F and the normal low is 48°F. From 1991 to 2020 the hottest May reading was 95°F (May 29, 2006).
Does it rain a lot in Dearborn in May?
About 13 days in May have at least 0.01 in of precipitation, and the normal total is 3.7 in. The wettest May in 1991-2020 was in 2004 (8.5 in); the driest was in 1994 (1.2 in).
Is May a good time to visit Dearborn?
May ranks 1st of 12 months on our comfort score for Dearborn (73 out of 100). It has about 16 comfortable days and about 1 day at 90°F or hotter. The best month is May.
Where the numbers come from
- Temperature and frost dates: Dearborn (USC00202015), 3.1 mi W of the city center, 605 ft . NOAA normals and daily records, 1991-2020.
- Rain, snowfall and snow depth: Detroit Metro Airport (USW00094847), 10 mi SW of the city center, 631 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: Detroit City Airport (USW00014822), 10 mi NE of the city center, 626 ft . NOAA normals and daily records, 1991-2020.
- Cloud cover: Flint Bishop Intl Airport (USW00014826), 53 mi NNW of the city center, 770 ft (179 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Detroit Metro Wayne County Airport (725370-94847), 10 mi SW of the city center, 630 ft . Hourly observations, 1991-2020.