Ashtabula weather in September: Ashtabula, Ohio: normal highs, lows, rain and records for September
Ashtabula in September has a normal high of 73°F and a normal low of 52°F, a daily mean of 62°F, falling from 77°F on the 1st to 68°F by the 30th. Measurable precipitation falls on 14 days in a normal September, 3.85 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 23°C and low of 11°C, 98 mm of precipitation in September.
- 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 September?
The normal high is 73°F and the normal low 52°F, for a daily mean of 62.4°F. September is 6.3°F cooler than August and 10.5°F warmer than October. September is the 4th warmest month of the year in Ashtabula and the 2nd wettest. Across the month the normal high falls 9°F, from 77°F on September 1 to 68°F on September 30. From one year to the next September's mean temperature typically moves about 2.4°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 60°F and 65°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 48%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 77°F | 56°F | 45% | 19% |
| September 8 | 75°F | 54°F | 45% | 20% |
| September 15 | 73°F | 52°F | 46% | 22% |
| September 22 | 71°F | 50°F | 47% | 23% |
| September 30 | 68°F | 47°F | 48% | 25% |
Every day of September: normal high, low and chance of precipitation (warmest afternoon September 1, coldest night September 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| September 1 | 77°F | 56°F | 45% | 19% | 13 h 10 min |
| September 2 | 77°F | 55°F | 45% | 19% | 13 h 10 min |
| September 3 | 77°F | 55°F | 45% | 19% | 13 h 10 min |
| September 4 | 76°F | 55°F | 45% | 20% | 13 h |
| September 5 | 76°F | 55°F | 45% | 20% | 13 h |
| September 6 | 76°F | 54°F | 45% | 20% | 13 h |
| September 7 | 76°F | 54°F | 45% | 20% | 12 h 50 min |
| September 8 | 75°F | 54°F | 45% | 20% | 12 h 50 min |
| September 9 | 75°F | 54°F | 45% | 21% | 12 h 50 min |
| September 10 | 75°F | 53°F | 46% | 21% | 12 h 50 min |
| September 11 | 75°F | 53°F | 46% | 21% | 12 h 40 min |
| September 12 | 74°F | 53°F | 46% | 21% | 12 h 40 min |
| September 13 | 74°F | 53°F | 46% | 21% | 12 h 40 min |
| September 14 | 74°F | 52°F | 46% | 22% | 12 h 40 min |
| September 15 | 73°F | 52°F | 46% | 22% | 12 h 30 min |
| September 16 | 73°F | 52°F | 46% | 22% | 12 h 30 min |
| September 17 | 73°F | 51°F | 46% | 22% | 12 h 30 min |
| September 18 | 73°F | 51°F | 46% | 22% | 12 h 20 min |
| September 19 | 72°F | 51°F | 46% | 22% | 12 h 20 min |
| September 20 | 72°F | 51°F | 46% | 22% | 12 h 20 min |
| September 21 | 72°F | 50°F | 47% | 23% | 12 h 20 min |
| September 22 | 71°F | 50°F | 47% | 23% | 12 h 10 min |
| September 23 | 71°F | 50°F | 47% | 23% | 12 h 10 min |
| September 24 | 70°F | 49°F | 47% | 23% | 12 h 10 min |
| September 25 | 70°F | 49°F | 47% | 24% | 12 h 10 min |
| September 26 | 70°F | 49°F | 47% | 24% | 12 h |
| September 27 | 69°F | 48°F | 48% | 24% | 12 h |
| September 28 | 69°F | 48°F | 48% | 24% | 12 h |
| September 29 | 69°F | 48°F | 48% | 25% | 11 h 50 min |
| September 30 | 68°F | 47°F | 48% | 25% | 11 h 50 min |
- Normal high
- 73°FSeptember average
- Normal low
- 52°FSeptember average
- Precipitation
- 3.85 inmonth total
- Days with precipitation
- 140.01 inch or more
- Days at 90°F or more
- 1
- Daylight
- 13 h 10 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 21
- Days at 80°F or more
- 8
- Sunshine
- 74%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 September?
On a given September day the chance of 0.01 inch or more is 46% on average, highest around September 30 (48%). In all, 3.85 in falls on 14 days of a normal September, 1 of them with an inch or more.
In a normal September in Ashtabula, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00004857.
What are the records for September in Ashtabula?
The warmest September temperature on this station's record (since 1998) is 96°F, on September 8, 2002; the coldest is 31°F, on September 22, 1999. The wettest September brought 7.17 in (2011).
The September mean against the 1991-2020 normal of 62.4°F: 2021 64.9°F (+2.5), 2022 63.7°F (+1.3), 2023 64.6°F (+2.2), 2024 65.9°F (+3.5), 2025 63.1°F (+0.7), 2026 65.1°F (+2.7). 6 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 64.9°F | +2.5°F | 2.88 in |
| 2022 | 63.7°F | +1.3°F | 4.82 in |
| 2023 | 64.6°F | +2.2°F | 0.18 in |
| 2024 | 65.9°F | +3.5°F | 1.47 in |
| 2025 | 63.1°F | +0.7°F | – |
| 2026 | 65.1°F | +2.7°F | 1.94 in |
Source: records: ACIS, station USW00004857; recent months: ACIS, station USW00004857. Records and recent months use complete months only.
How does September in Ashtabula compare across Ohio?
Across the 99 places PlainClimate covers in Ohio, September normal highs run from 73°F in Ashtabula to 81°F in Chilo; Ashtabula's is 73°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.