Climateby Month

Durham, NC weather in May

NOAA 1991-2020 normals and daily records · Durham all year

In May, Durham sees highs around 80°F and lows around 58°F: warm, with some rain. Rain falls on about 10 days. Good for outdoor plans.

Normal high
80°F
Normal low
58°F
Wet days
10
3.4 in total
Muggy days
6
dew point 65°F+

How May changes from start to finish

Normal values at the start and end of May
May 1May 31
Normal high77°F84°F
Normal low54°F62°F
Chance of a wet day32%34%
Sunrise / sunset6:22 am / 8:02 pm6:00 am / 8:26 pm
Daylight13.7 h14.4 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

  1. 6 am60°Fdew point 56°F
  2. 9 am69°Fdew point 57°F
  3. Noon75°Fdew point 57°F
  4. 3 pm78°Fdew point 57°F
  5. 6 pm74°Fdew point 57°F
  6. 9 pm67°Fdew point 58°F

NOAA hourly normals (local standard time) from Raleigh Durham Intl Airport (10 mi away); average wind 7 mph; clear or few clouds in 45% of daytime hours, mostly cloudy or overcast in 40%.

What kind of days to expect

  • Comfortable dayshigh 65-80°F and dew point under 60°F10 of 31
  • Hot dayshigh 90°F or more3 of 31
  • Muggy daysdaily mean dew point 65°F or more6 of 31
  • Wet daysat least 0.01 in of rain or melted snow10 of 31
  • Notable rainat least 0.10 in7 of 31
  • Freezing nightslow 32°F or below0 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 3.4 in; a dry May brings about 2.7 in and a wet one about 4.1 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, 1991-20202018: average high 84°F
  • Coolest May1992: average high 74°F
  • Wettest May2016: 6.2 in
  • Driest May1999: 0.6 in
  • Highest reading96°F (May 30, 2019)
  • Lowest reading36°F (May 10, 2020)

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

AprilMayJune
Normal high73°F80°F87°F
Normal low49°F58°F66°F
Wet days101011
Comfortable days16102
Daylight13.1 h14.1 h14.6 h

Highs change by +7°F from April and +7°F into June.

Nearby alternatives in May

How Durham ranks in May

  • Normal high139th warmest of 378 cities; 7th of 10 in North Carolina
  • Wet days193rd driest of 378
  • Comfortable days210th most of 339

What to pack for Durham in May

  • A rain jacket or umbrella – rain on about 10 days
  • Sunglasses and sunscreen – about 14.1 hours of daylight and highs near 80°F

Heating and cooling

May has 47 heating degree days and 166 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.

Questions

How hot is Durham in May?

The normal high is 80°F and the normal low is 58°F. From 1991 to 2020 the hottest May reading was 96°F (most recently on May 30, 2019).

Does it rain a lot in Durham in May?

About 10 days in May have at least 0.01 in of precipitation, and the normal total is 3.4 in. The wettest May in 1991-2020 was in 2016 (6.2 in); the driest was in 1999 (0.6 in).

Is May a good time to visit Durham?

May ranks 3rd of 12 months on our comfort score for Durham (64 out of 100). It has about 10 comfortable days and about 3 days at 90°F or hotter. The best month is April.

Where the numbers come from

  • Temperature, rain, snowfall, snow depth, frost dates and humidity and wind by hour: Raleigh Durham Intl Airport (USW00013722), 9.6 mi SE of the city center, 416 ft . NOAA normals and daily records, 1991-2020.
  • Cloud cover: Pope AFB (USW00013714), 57 mi S of the city center, 218 ft (177 ft lower than the city). NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: Raleigh-Durham International Airport (723060-13722), 9.6 mi SE of the city center, 395 ft . Hourly observations, 1991-2020.