Concord, CA weather in May
In May, Concord sees highs around 78°F and lows around 46°F: mild and mostly dry. Rain falls on about 3 days. Great for outdoor plans.
- Normal high
- 78°F
- Normal low
- 46°F
- Wet days
- 3
- 0.6 in total
- Muggy days
- 0
- dew point 65°F+
How May changes from start to finish
| May 1 | May 31 | |
|---|---|---|
| Normal high | 75°F | 82°F |
| Normal low | 44°F | 48°F |
| Chance of a wet day | 13% | 7% |
| Sunrise / sunset | 6:11 am / 7:58 pm | 5:47 am / 8:24 pm |
| Daylight | 13.8 h | 14.6 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Pacific Time).
A typical May day
- 6 am54°Fdew point 48°F
- 9 am65°Fdew point 48°F
- Noon74°Fdew point 48°F
- 3 pm76°Fdew point 49°F
- 6 pm69°Fdew point 49°F
- 9 pm59°Fdew point 49°F
NOAA hourly normals (local standard time) from Travis AFB (21 mi away); average wind 15 mph; clear or few clouds in 69% of daytime hours, mostly cloudy or overcast in 23%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F19 of 31
- Hot dayshigh 90°F or more3 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow3 of 31
- Notable rainat least 0.10 in2 of 31
- Freezing nightslow 32°F or below0 of 31
Average days per May, counted from daily records for each year 1991-2020.
Rain in May
Normal precipitation is 0.6 in; a dry May brings about 0.04 in and a wet one about 0.9 in (25th and 75th percentiles). Days with half an inch or more are rare.
How May varies from year to year
- Warmest May, 1991-20202001: average high 87°F
- Coolest May1998: average high 68°F
- Wettest May1998: 2.7 in
- Driest May1992: no measurable precipitation
- Highest reading104°F (May 31, 2001)
- Lowest reading38°F (May 2, 2006)
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 | 71°F | 78°F | 85°F |
| Normal low | 43°F | 46°F | 50°F |
| Wet days | 5 | 3 | 1 |
| Comfortable days | 21 | 19 | 10 |
| Daylight | 13.2 h | 14.2 h | 14.8 h |
Highs change by +7°F from April and +7°F into June.
Nearby alternatives in May
- Warmer: Bakersfield, CA245 mi · high 84°F · 2 wet days
- Cooler: Hayward, CA22 mi · high 68°F · 4 wet days
How Concord ranks in May
- Normal high158th warmest of 378 cities; 27th of 60 in California
- Wet days59th driest of 378
- Comfortable days25th most of 339
What to pack for Concord in May
- Layers – afternoons near 78°F but nights near 46°F
- Sunglasses and sunscreen – about 14.2 hours of daylight and highs near 78°F
Heating and cooling
May has 129 heating degree days and 35 cooling degree days (base 65°F), 5% of the year's total heating and cooling demand.
Questions
How hot is Concord in May?
The normal high is 78°F and the normal low is 46°F. From 1991 to 2020 the hottest May reading was 104°F (most recently on May 31, 2001).
Does it rain a lot in Concord in May?
About 3 days in May have at least 0.01 in of precipitation, and the normal total is 0.6 in. The wettest May in 1991-2020 was in 1998 (2.7 in); the driest was in 1992, with no measurable precipitation.
Is May a good time to visit Concord?
May ranks 2nd of 12 months on our comfort score for Concord (80 out of 100). It has about 19 comfortable days and about 3 days at 90°F or hotter. The best months are April and May.
Where the numbers come from
- Temperature: Martinez WTP (USC00045378), 5.1 mi WNW of the city center, 40 ft . NOAA normals and daily records, 1991-2020.
- Rain, snowfall and snow depth: Concord Wwtp (USC00041967), 2.1 mi W of the city center, 40 ft . NOAA normals and daily records, 1991-2020.
- Frost dates: Concord Buchanan Fld (USW00023254), 1.6 mi NW of the city center, 18 ft (57 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour and cloud cover: Travis AFB (USW00023202), 21 mi NNE of the city center, 59 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Travis Air Force Base (745160-23202), 21 mi NNE of the city center, 62 ft . Hourly observations, 1991-2020.