Fremont weather in September

In September, Fremont sees average daytime highs of 74°F and overnight lows near 56°F, with 2.7 in of rain across 9 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 78°F in the first days to 70°F by the end. The sky is clear or mostly clear about 37% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 hours at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Fremont's 1st-clearest and 10th-windiest month. For the whole year in context, see Fremont's year-round climate.

Daytime high
74°
4th warmest
Overnight low
56°
9th coldest
Rainfall
2.7 in
9 wet days
Daylight
12 h 18 min
6:19 AM – 6:35 PM
Cloud cover
53%
1st clearest
Wind
7 mph
10th windiest
Solar energy
4.44 kWh/m²
Travel score
7.0
out of 10

Fremont is city in and county seat of Sandusky County, Ohio, United States.

Density
735/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 78°F in the first days to 70°F by the end.

A typical September day in Fremont reaches about 74°F in the afternoon and slips back to 56°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 64°F and 85°F. Set against its neighbours, September runs about 6°F cooler than August and about 12°F warmer than October.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
17961
27861
37861
47860
57860
67860
77759
87759
97759
107658
117658
127658
137557
147557
157556
167456
177456
187455
197355
207354
217354
227254
237253
247253
257153
267152
277052
287051
297051
306951

How September really feels in Fremont

Once humidity and wind are folded in, September averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Fremont weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan34° / 21°2.810.56.49.40.0
Feb37° / 22°2.39.25.310.30.0
Mar47° / 30°3.210.83.811.71.4
Apr60° / 41°4.012.3113.14.3
May70° / 52°4.213.6014.35.9
Jun79° / 62°4.012014.96.3
Jul82° / 65°3.511.5014.76.1
Aug80° / 63°3.410.8013.76.5
Sep74° / 56°2.79012.37.0
Oct63° / 45°2.89.60.110.95.4
Nov50° / 35°3.09.31.39.72.2
Dec39° / 26°2.89.84.49.10.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 46%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16040
26040
36040
45941
55941
65941
75941
85842
95842
105644
115644
125545
135545
145446
155347
165347
175347
185248
195248
205248
215149
225149
235149
245149
255149
265050
275050
285149
295050
305050

Chance of precipitation in September

Any precipitation

Fremont gets around 2.7 in of rain over 9 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 30% and peaks near 32% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
132
232
332
432
531
631
731
830
930
1030
1129
1229
1329
1429
1529
1629
1729
1829
1929
2029
2129
2230
2330
2430
2531
2631
2732
2832
2932
3031

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 49% of days. Sticky, muggy-or-worse air turns up on roughly 13% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1222526225
2242526214
3252525204
4272624193
5292624183
6312623173
7332622172
8352622162
9362621152
10382621141
11402520131
12422519131
13442419121
14462418121
15482417111
16512316100
17512316100
1854221590
1957211480
2058211380
2161201270
2262191270
2363191170
2466181060
2566181060
266817960
276817960
287116850
297215850
307215850

Wind in September

Winds average 7 mph in September.

Across September, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157light breeze
168light breeze
178light breeze
188light breeze
198light breeze
208light breeze
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 hours at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over September. Sunrise moves from 6:03 AM to 6:33 AM, and sunset from 7:01 PM to 6:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:037:01
212.96:047:00
312.96:056:58
412.86:066:56
512.86:076:54
612.76:086:53
712.76:096:51
812.66:106:49
912.66:116:47
1012.66:126:46
1112.56:136:44
1212.56:146:42
1312.46:166:40
1412.46:176:39
1512.36:186:37
1612.36:196:35
1712.26:206:33
1812.26:216:31
1912.16:226:30
2012.16:236:28
2112.06:246:26
2212.06:256:24
2311.96:266:22
2411.96:276:21
2511.86:286:19
2611.86:296:17
2711.86:306:15
2811.76:316:14
2911.76:326:12
3011.66:336:10

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.44 kWh/m².

For context, solar energy here swings from a low near 1.55 kWh/m² to a high of 6.41 kWh/m² in June across the year — September's 4.44 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
34.9Bright
44.9Bright
54.8Bright
64.8Bright
74.8Bright
84.7Bright
94.7Bright
104.7Bright
114.6Bright
124.6Bright
134.5Bright
144.5Bright
154.5Bright
164.4Bright
174.4Bright
184.3Bright
194.3Bright
204.3Bright
214.2Bright
224.2Bright
234.1Bright
244.1Bright
254.0Bright
264.0Moderate
273.9Moderate
283.9Moderate
293.9Moderate
303.8Moderate
Planning a trip in September

Is September a good time to visit Fremont?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

7.0
Sightseeing
1st-best month of the year
5.6
Beach & pool
4th-best month of the year

September is one of the better times to visit Fremont for general sightseeing.

What to pack for Fremont in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Fremont sees daytime highs around 74°F and nights near 56°F. Worth packing: light clothes and rain gear. About 9 days see rain.

light clothesrain gear

Sea temperature near Fremont in September

The nearest coast averages about 70°F in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 19 mi away) is warmest in August at about 75°F and coldest in February near 33°F.

It's comfortable for a long swim from Jun 19 to Sep 21 — about 3.1 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan34Bracing
Feb33Bracing
Mar35Bracing
Apr43Bracing
May55Bracing
Jun67Cool
Jul75Refreshing
Aug75Warm
Sep70Refreshing
Oct59Bracing
Nov46Bracing
Dec38Bracing

UV index in Fremont in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Fremont peaks around June 19 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 19UV 9Dec 21UV 1
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar5Moderate
Apr6High
May7Very high
Jun9Very high
Jul9Very high
Aug7Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in Fremont in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Fremont is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 8 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1116 µg/m³Oct 238 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Moderate
Mar13Moderate
Apr14Moderate
May15Moderate
Jun16Moderate
Jul16Moderate
Aug15Moderate
Sep12Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is Fremont?

Fremont sits at 41.4°N, 83.1°W, 627 ft above sea level, in United States. The nearest listed city is Tiffin, 17 mi away.

Topography around Fremont

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Fremont.

Within 2 miles, the terrain around Fremont has only modest variations in elevation — a maximum elevation change of 148 ft around an average of 623 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 302 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,115 ft.

The land around Fremont is covered by trees (29%), grassland (27%) and artificial surfaces (26%) within 2 miles, cropland (66%) within 10 miles, and cropland (53%) and water (24%) within 50 miles.

2 miles
148 ft
10 miles
302 ft
50 miles
1,115 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Tiffin 17 mi · Sandusky 22 mi · Norwalk 27 mi · Bowling Green 27 mi · Oregon 28 mi · Perrysburg 30 mi · Toledo 31 mi · Findlay 35 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Fremont (41.3503°, -83.1219°, elevation 627 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).