Lewes weather in May: Lewes, Delaware: normal highs, lows, rain and records for May
Lewes in May has a normal high of 75°F and a normal low of 56°F, a daily mean of 65°F, rising from 71°F on the 1st to 79°F by the 31st. Measurable precipitation falls on 11 days in a normal May, 3.38 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 24°C and low of 13°C, 86 mm of precipitation in May.
- NOAA stationLewes
- Station IDUSC00075320
- Location38.78°N 75.16°W
- Elevation10 ft (3 m)
- Population3,702
- Jan 46° 30°
- Feb 48° 32°
- Mar 55° 38°
- Apr 66° 46°
- May 75° 56°
- Jun 83° 66°
- Jul 88° 71°
- Aug 86° 69°
- Sep 80° 64°
- Oct 69° 52°
- Nov 59° 42°
- Dec 50° 35°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Lewes in May?
The normal high is 75°F and the normal low 56°F, for a daily mean of 65.3°F. May is 9.0°F warmer than April and 9.2°F cooler than June. May is the 5th warmest month of the year in Lewes and the 10th wettest. Across the month the normal high rises 8°F, from 71°F on May 1 to 79°F on May 31. From one year to the next May's mean temperature typically moves about 3.3°F either way (NOAA's standard deviation), so roughly two Mays in three average between 62°F and 69°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 36%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 71°F | 52°F | 36% | 21% |
| May 8 | 73°F | 54°F | 35% | 21% |
| May 15 | 74°F | 56°F | 34% | 20% |
| May 22 | 76°F | 58°F | 34% | 20% |
| May 31 | 79°F | 61°F | 33% | 21% |
Every day of May: normal high, low and chance of precipitation (warmest afternoon May 31, coldest night May 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| May 1 | 71°F | 52°F | 36% | 21% | 13 h 50 min |
| May 2 | 71°F | 52°F | 36% | 21% | 13 h 50 min |
| May 3 | 72°F | 52°F | 36% | 21% | 13 h 50 min |
| May 4 | 72°F | 53°F | 36% | 21% | 13 h 50 min |
| May 5 | 72°F | 53°F | 36% | 21% | 14 h |
| May 6 | 72°F | 53°F | 36% | 21% | 14 h |
| May 7 | 73°F | 53°F | 35% | 21% | 14 h |
| May 8 | 73°F | 54°F | 35% | 21% | 14 h |
| May 9 | 73°F | 54°F | 35% | 21% | 14 h |
| May 10 | 73°F | 54°F | 35% | 21% | 14 h 10 min |
| May 11 | 73°F | 55°F | 35% | 21% | 14 h 10 min |
| May 12 | 74°F | 55°F | 35% | 20% | 14 h 10 min |
| May 13 | 74°F | 55°F | 35% | 20% | 14 h 10 min |
| May 14 | 74°F | 55°F | 35% | 20% | 14 h 10 min |
| May 15 | 74°F | 56°F | 34% | 20% | 14 h 20 min |
| May 16 | 75°F | 56°F | 34% | 20% | 14 h 20 min |
| May 17 | 75°F | 56°F | 34% | 20% | 14 h 20 min |
| May 18 | 75°F | 57°F | 34% | 20% | 14 h 20 min |
| May 19 | 75°F | 57°F | 34% | 20% | 14 h 20 min |
| May 20 | 75°F | 57°F | 34% | 20% | 14 h 20 min |
| May 21 | 76°F | 57°F | 34% | 20% | 14 h 30 min |
| May 22 | 76°F | 58°F | 34% | 20% | 14 h 30 min |
| May 23 | 76°F | 58°F | 34% | 20% | 14 h 30 min |
| May 24 | 76°F | 58°F | 34% | 20% | 14 h 30 min |
| May 25 | 77°F | 59°F | 34% | 20% | 14 h 30 min |
| May 26 | 77°F | 59°F | 34% | 21% | 14 h 30 min |
| May 27 | 77°F | 59°F | 34% | 21% | 14 h 30 min |
| May 28 | 78°F | 60°F | 34% | 21% | 14 h 40 min |
| May 29 | 78°F | 60°F | 34% | 21% | 14 h 40 min |
| May 30 | 78°F | 60°F | 33% | 21% | 14 h 40 min |
| May 31 | 79°F | 61°F | 33% | 21% | 14 h 40 min |
- Normal high
- 75°FMay average
- Normal low
- 56°FMay average
- Precipitation
- 3.38 inmonth total
- Days with precipitation
- 110.01 inch or more
- Days at 90°F or more
- 1
- Daylight
- 13 h 50 min to 14 h 40 minMay 1 to May 31
- Days at 70°F or more
- 21
- Days at 80°F or more
- 10
- Sunshine
- 75%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00075320; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Lewes in May?
On a given May day the chance of 0.01 inch or more is 35% on average, highest around May 1 (36%). In all, 3.38 in falls on 11 days of a normal May, 1 of them with an inch or more.
In a normal May in Lewes, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00075320.
What are the records for May in Lewes?
The warmest May temperature on this station's record (since 1945) is 97°F, on May 19, 1997; the coldest is 27°F, on May 9, 1947. The wettest May brought 14.62 in (1948).
The May mean against the 1991-2020 normal of 65.3°F: 2021 62.8°F (−2.5), 2022 63.5°F (−1.8), 2023 60.1°F (−5.2), 2024 64.1°F (−1.2), 2025 64.7°F (−0.6), 2026 63.7°F (−1.6). 0 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 62.8°F | −2.5°F | 2.85 in |
| 2022 | 63.5°F | −1.8°F | 2.72 in |
| 2023 | 60.1°F | −5.2°F | 2.48 in |
| 2024 | 64.1°F | −1.2°F | 2.07 in |
| 2025 | 64.7°F | −0.6°F | 6.06 in |
| 2026 | 63.7°F | −1.6°F | 1.33 in |
Source: records: ACIS, station USC00075320; recent months: ACIS, station USC00075320. Records and recent months use complete months only.
How does May in Lewes compare across Delaware?
Across the 6 places PlainClimate covers in Delaware, May normal highs run from 73°F in Greenwood to 76°F in Newark; Lewes's is 75°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.