May weather forecastAshtabula, OH

May

Weather in May

May in Ashtabula, Ohio, brings a weather transition that prepares the city for the upcoming warmer months. The landscape thrives under enhanced sunshine, stimulating increased outdoor activities by its residents. Long daylight hours invite extended stay-outs, while warmer sea temperatures enrich the vibrancy of the marine life. As the temperatures climb from a high of 50.9°F (10.5°C) in April to 62.4°F (16.9°C) in May, the occasional rainfall keeps the ambiance refreshing. Generally, May ushers in the early stages of summer, with weather conditions favoring outdoor pursuits and sightseeing in the historic city.

Temperature

May shows a rise in the average high-temperature, moving from April's cool 50.9°F (10.5°C) to a refreshing 62.4°F (16.9°C). During the month of May, an average low-temperature of 48.9°F (9.4°C) is recorded.

Humidity

In Ashtabula, the average relative humidity in May is 80%.

Rainfall

In Ashtabula, in May, it is raining for 18.4 days, with typically 3.58" (91mm) of accumulated precipitation. Throughout the year, in Ashtabula, there are 181 rainfall days, and 36.34" (923mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.4 snowfall days, in May, Ashtabula aggregates 0.08" (2mm) of snow. Throughout the year, there are 71.4 snowfall days, and 25.28" (642mm) of snow is accumulated.

Ocean temperature

In Ashtabula, the average seawater temperature in May is 47.8°F (8.8°C).
Note: Swimming in 47.8°F (8.8°C) at temperatures under 50°F (10°C) requires thermal swimsuits; otherwise, one can face cold shock and breathing difficulty. Even brief immersion at 55.4°F (13°C) feels frosty.

Daylight

In May, the average length of the day is 14h and 34min.
On the first day of May, sunrise is at 6:18 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:51 pm EDT.

Sunshine

In May, the average sunshine is 9.1h.

UV index

In Ashtabula, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.
Note: In May, a daily UV index of 5 turns into the following recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Always opt for UVA and UVB-resistant sunglasses on radiant days. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.

Updated: Jul 9, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in May, in Ashtabula, records 62.4°F (16.9°C), while the low-temperature is 48.9°F (9.4°C).

The average relative humidity in May in Ashtabula is 80%.

In Ashtabula, in May, it is raining for 18.4 days, with typically 3.58" (91mm) of accumulated precipitation.

May is the last month it regularly snows. During 0.4 snowfall days, in May, Ashtabula aggregates 0.08" (2mm) of snow.

In Ashtabula, Ohio, in May, the average water temperature is 47.8°F (8.8°C). Swimming in 47.8°F (8.8°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

The average day length in May is 14h and 34min.

In May, on the first day of the month, sunrise is at 6:18 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:51 pm EDT.

In May, the average sunshine duration is 9.1h.

In Ashtabula, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A May J J A S O N D

Apr

May

Jun

Average high temperature

50.9°F

62.4°F

71.2°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

10.2mph

8.5mph

8.1mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

3.7

0.4

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

9.8

10.3

Average UV index

Average cloud cover

Average visibility

Average temperature in May
Ashtabula, OH

Average high temperature in May: 62.4°F

The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (30.6°F).

Average low temperature in May: 48.9°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (21°F).

Average pressure in May
Ashtabula, OH

Average pressure in May: 29.99"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in May
Ashtabula, OH

Average wind speed in May: 7.9mph

The windiest month (with the highest average wind speed) is January (11.4mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).

Average humidity in May
Ashtabula, OH

Average humidity in May: 80%

The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are July, August and September (78%).

Average rainfall in May
Ashtabula, OH

Average rainfall in May: 3.58"

The wettest month (with the highest rainfall) is June (3.94").
The driest months (with the least rainfall) are February and November (2.4").

Average rainfall days in May
Ashtabula, OH

Average rainfall days in May: 18.4 days

The month with the highest number of rainy days is August (18.8 days).
The month with the least rainy days is January (7.9 days).

Average snowfall in May
Ashtabula, OH

Average snowfall in May: 0.08"

The month with the highest snowfall is January (6.69").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Ashtabula, OH

Average snowfall days in May: 0.4 days

The month with the highest number of snowfall days is January (18.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in May
Ashtabula, OH

Average sea temperature in May: 47.8°F

The best month for swimming (with the highest average sea temperature) is August (75.7°F).
The coldest month (with the lowest average sea temperature) is February (32.7°F).

Average daylight in May /
Average sunshine in May
Ashtabula, OH

Average daylight in May: 14h and 36min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

Average sunshine in May: 9h and 6min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).

Average sunshine days in May
Ashtabula, OH

Average sunshine days in May: 10 days

The month with the most sunshine days is September (11 days).
The month with the least sunshine days is January (5.9 days).

Average UV index in May
Ashtabula, OH

Average UV index in May: 5

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in May
Ashtabula, OH

Average cloud cover in May: 40

The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 27).

Average visibility in May
Ashtabula, OH

Average visibility in May: 6mi

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).