Ashtabula weather in May: Ashtabula, Ohio: normal highs, lows, rain and records for May
Ashtabula in May has a normal high of 69°F and a normal low of 46°F, a daily mean of 58°F, rising from 64°F on the 1st to 73°F by the 31st. Measurable precipitation falls on 14 days in a normal May, 3.30 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 20°C and low of 8°C, 84 mm of precipitation in May.
- NOAA stationAshtabula County Airport
- Station IDUSW00004857
- Location41.78°N 80.70°W
- Elevation924 ft (282 m)
- From the center9 miles
- Population17,775
- Jan 33° 19°
- Feb 36° 19°
- Mar 44° 26°
- Apr 58° 36°
- May 69° 46°
- Jun 77° 55°
- Jul 81° 60°
- Aug 79° 58°
- Sep 73° 52°
- Oct 61° 42°
- Nov 49° 34°
- Dec 38° 26°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Ashtabula in May?
The normal high is 69°F and the normal low 46°F, for a daily mean of 57.6°F. May is 10.7°F warmer than April and 8.6°F cooler than June. May is the 5th warmest month of the year in Ashtabula and the 7th wettest. Across the month the normal high rises 9°F, from 64°F on May 1 to 73°F on May 31. From one year to the next May's mean temperature typically moves about 3.5°F either way (NOAA's standard deviation), so roughly two Mays in three average between 54°F and 61°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 46%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 64°F | 41°F | 45% | 25% |
| May 8 | 67°F | 44°F | 45% | 25% |
| May 15 | 69°F | 46°F | 46% | 25% |
| May 22 | 71°F | 48°F | 45% | 24% |
| May 31 | 73°F | 51°F | 44% | 24% |
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 | 64°F | 41°F | 45% | 25% | 14 h |
| May 2 | 64°F | 42°F | 45% | 25% | 14 h |
| May 3 | 65°F | 42°F | 45% | 25% | 14 h |
| May 4 | 65°F | 42°F | 45% | 25% | 14 h 10 min |
| May 5 | 66°F | 43°F | 45% | 25% | 14 h 10 min |
| May 6 | 66°F | 43°F | 45% | 25% | 14 h 10 min |
| May 7 | 66°F | 43°F | 45% | 25% | 14 h 10 min |
| May 8 | 67°F | 44°F | 45% | 25% | 14 h 20 min |
| May 9 | 67°F | 44°F | 45% | 25% | 14 h 20 min |
| May 10 | 67°F | 44°F | 46% | 25% | 14 h 20 min |
| May 11 | 67°F | 45°F | 46% | 25% | 14 h 20 min |
| May 12 | 68°F | 45°F | 46% | 25% | 14 h 20 min |
| May 13 | 68°F | 45°F | 46% | 25% | 14 h 30 min |
| May 14 | 68°F | 46°F | 46% | 25% | 14 h 30 min |
| May 15 | 69°F | 46°F | 46% | 25% | 14 h 30 min |
| May 16 | 69°F | 46°F | 45% | 25% | 14 h 30 min |
| May 17 | 69°F | 47°F | 45% | 25% | 14 h 30 min |
| May 18 | 70°F | 47°F | 45% | 25% | 14 h 40 min |
| May 19 | 70°F | 47°F | 45% | 24% | 14 h 40 min |
| May 20 | 70°F | 48°F | 45% | 24% | 14 h 40 min |
| May 21 | 70°F | 48°F | 45% | 24% | 14 h 40 min |
| May 22 | 71°F | 48°F | 45% | 24% | 14 h 40 min |
| May 23 | 71°F | 49°F | 45% | 24% | 14 h 50 min |
| May 24 | 71°F | 49°F | 45% | 24% | 14 h 50 min |
| May 25 | 71°F | 49°F | 45% | 24% | 14 h 50 min |
| May 26 | 72°F | 50°F | 45% | 24% | 14 h 50 min |
| May 27 | 72°F | 50°F | 45% | 24% | 14 h 50 min |
| May 28 | 72°F | 50°F | 44% | 24% | 14 h 50 min |
| May 29 | 73°F | 51°F | 44% | 24% | 15 h |
| May 30 | 73°F | 51°F | 44% | 24% | 15 h |
| May 31 | 73°F | 51°F | 44% | 24% | 15 h |
- Normal high
- 69°FMay average
- Normal low
- 46°FMay average
- Precipitation
- 3.30 inmonth total
- Days with precipitation
- 140.01 inch or more
- Nights at 32°F or colder
- 1
- Daylight
- 14 h to 15 hMay 1 to May 31
- Days at 70°F or more
- 17
- Days at 80°F or more
- 7
- Sunshine
- 69%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00004857; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Ashtabula in May?
On a given May day the chance of 0.01 inch or more is 45% on average, highest around May 12 (46%). In all, 3.30 in falls on 14 days of a normal May, 1 of them with an inch or more.
In a normal May in Ashtabula, 1 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00004857.
What are the records for May in Ashtabula?
The warmest May temperature on this station's record (since 1998) is 90°F, on May 31, 2011; the coldest is 27°F, on May 10, 2010. The wettest May brought 6.59 in (2011).
The May mean against the 1991-2020 normal of 57.6°F: 2021 56.6°F (−1.0), 2022 61.7°F (+4.1), 2023 56.6°F (−1.0), 2024 62.8°F (+5.2), 2025 56.0°F (−1.6), 2026 55.4°F (−2.2). 2 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 56.6°F | −1.0°F | 1.56 in |
| 2022 | 61.7°F | +4.1°F | 3.72 in |
| 2023 | 56.6°F | −1.0°F | 0.54 in |
| 2024 | 62.8°F | +5.2°F | 1.69 in |
| 2025 | 56.0°F | −1.6°F | 3.43 in |
| 2026 | 55.4°F | −2.2°F | 2.14 in |
Source: records: ACIS, station USW00004857; recent months: ACIS, station USW00004857. Records and recent months use complete months only.
How does May in Ashtabula compare across Ohio?
Across the 99 places PlainClimate covers in Ohio, May normal highs run from 69°F in Sandusky to 76°F in Milford; Ashtabula's is 69°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.