Tiffin weather in December

In December, Tiffin sees average daytime highs of 39°F and overnight lows near 26°F, with 2.9 in of precipitation across 10.2 wet days and about 9.1 hours of daylight. It is the 10th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 43°F in the first days to 36°F by the end. The sky is clear or mostly clear about 15% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 18 min at the start of December to 9 h 06 min by month's end. Set against the rest of the year, December is Tiffin's 11th-clearest and 5th-windiest month. For the whole year in context, see Tiffin's year-round climate.

Daytime high
39°
10th warmest
Overnight low
26°
3rd coldest
Precipitation
2.9 in
10.2 wet days
Daylight
9 h 06 min
7:57 AM – 5:00 PM
Cloud cover
76%
11th clearest
Wind
10 mph
5th windiest
Solar energy
1.57 kWh/m²
Travel score
0.1
out of 10

Tiffin is city in and the county seat of Seneca County, Ohio, United States.

Density
990/km²
people per km²
Founded
1812

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 43°F in the first days to 36°F by the end.

A typical December day in Tiffin reaches about 39°F in the afternoon and slips back to 26°F overnight — a 13°F spread between the day's warmth and the night's chill. On most days the high lands between 25°F and 54°F. Set against its neighbours, December runs about 11°F cooler than November and about 5°F warmer than January.

20°40°60°151015202531
Avg high (°F)Avg low (°F)
14430
24330
34329
44229
54229
64129
74128
84028
94028
104027
114027
123927
133926
143926
153826
163826
173826
183825
193825
203825
213725
223725
233724
243724
253724
263724
273724
283724
293724
303624
313623

How December really feels in Tiffin

Once humidity and wind are folded in, December averages 0 days that feel above 90°F and 31 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
31
6 feel bitter (≤ 14°F)

The story in December is cold — wind chill drags the overnight "feels like" below the raw low.

Tiffin weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan34° / 21°2.910.76.29.40.0
Feb37° / 22°2.49.15.210.40.0
Mar48° / 30°3.411.23.611.71.6
Apr60° / 41°4.112.60.813.14.5
May71° / 52°4.313.3014.36.0
Jun79° / 61°4.012014.96.3
Jul82° / 65°3.411.3014.76.1
Aug81° / 63°3.210.2013.66.5
Sep75° / 56°2.79.1012.37.0
Oct63° / 45°2.89.40.210.95.5
Nov50° / 35°3.19.21.49.72.2
Dec39° / 26°2.910.24.39.10.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 10% of December, with mostly cloudy or overcast conditions the remaining 75%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12773
22674
32575
42575
52575
62377
72377
82377
92476
102377
112377
122278
132377
142377
152377
162575
172575
182575
192674
202575
212575
222674
232773
242674
252674
262674
272575
282575
292575
302575
312476

Chance of precipitation in December

Any precipitationSnow

Tiffin gets around 2.9 in of rain and snow over 10.2 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 34% and peaks near 34% on the wettest days, and about 4 days bring snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
13410
23411
33411
43412
53412
63313
73313
83314
93314
103414
113414
123415
133415
143415
153415
163415
173415
183414
193414
203414
213414
223314
233314
243314
253314
263314
273314
283315
293415
303416
313416

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1991
2991
3991
4991
5991
6991
7991
8991
9991
10991
11991
12991
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000
311000

Wind in December

Winds average 10 mph in December.

Across December, daily wind ranges from about 10 mph on the calmest days to 10 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
110light breeze
210light breeze
310light breeze
410light breeze
510light breeze
610light breeze
710light breeze
810light breeze
910light breeze
1010light breeze
1110light breeze
1210light breeze
1310light breeze
1410light breeze
1510light breeze
1610light breeze
1710light breeze
1810light breeze
1910light breeze
2010light breeze
2110light breeze
2210light breeze
2310light breeze
2410light breeze
2510light breeze
2610light breeze
2710light breeze
2810light breeze
2910light breeze
3010light breeze
3110light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 18 min at the start of December to 9 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 7:45 AM to 8:04 AM, and sunset from 5:00 PM to 5:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.37:455:00
29.27:465:00
39.27:475:00
49.27:485:00
59.27:495:00
69.27:494:59
79.27:504:59
89.17:514:59
99.17:524:59
109.17:534:59
119.17:545:00
129.17:545:00
139.17:555:00
149.17:565:00
159.17:575:00
169.17:575:00
179.07:585:01
189.07:585:01
199.07:595:01
209.08:005:02
219.08:005:02
229.08:015:03
239.08:015:03
249.08:025:04
259.08:025:04
269.08:025:05
279.08:035:05
289.18:035:06
299.18:035:07
309.18:035:07
319.18:045:08

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.57 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.57 kWh/m² to a high of 6.28 kWh/m² in June across the year — December's 1.57 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.6Dim
21.6Dim
31.6Dim
41.6Dim
51.6Dim
61.6Dim
71.6Dim
81.6Dim
91.6Dim
101.6Dim
111.6Dim
121.6Dim
131.6Dim
141.6Dim
151.6Dim
161.6Dim
171.6Dim
181.6Dim
191.6Dim
201.6Dim
211.6Dim
221.6Dim
231.6Dim
241.6Dim
251.6Dim
261.6Dim
271.6Dim
281.6Dim
291.6Dim
301.6Dim
311.6Dim
Planning a trip in December

Is December a good time to visit Tiffin?

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

0.1
Sightseeing
10th-best month of the year
0.0
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Tiffin.

What to pack for Tiffin in December

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

In December, Tiffin sees daytime highs around 39°F and nights near 26°F. Pack a warm layer and a heavy coat. Worth having: rain gear. About 10 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Tiffin in December

The nearest coast averages about 38°F in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 35 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 Tiffin in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Tiffin 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 Tiffin in December

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Tiffin 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 Tiffin?

Tiffin sits at 41.1°N, 83.2°W, 745 ft above sea level, in United States. The nearest listed city is Fremont, 17 mi away.

Topography around Tiffin

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

Within 2 miles, the terrain around Tiffin has only modest variations in elevation — a maximum elevation change of 167 ft around an average of 764 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 430 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,106 ft.

The land around Tiffin is covered by grassland (27%), cropland (26%) and trees (25%) within 2 miles, cropland (71%) within 10 miles, and cropland (61%) within 50 miles.

2 miles
167 ft
10 miles
430 ft
50 miles
1,106 ft
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Fremont 17 mi · Findlay 25 mi · Bowling Green 30 mi · Norwalk 30 mi · Sandusky 34 mi · Marion 37 mi · Perrysburg 39 mi · Oregon 40 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 Tiffin (41.1145°, -83.178°, elevation 745 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).