Frosinone weather in January

In January, Frosinone sees average daytime highs of 8°C and overnight lows near 0°C, with 93 mm of precipitation across 9.8 wet days and about 9.3 hours of daylight. It is the 12th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 8°C through the month. The sky is clear or mostly clear about 39% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 hours at the start of January to 9 h 42 min by month's end. Set against the rest of the year, January is Frosinone's 8th-clearest and 7th-windiest month. For the whole year in context, see Frosinone's year-round climate.

Daytime high
12th warmest
Overnight low
2nd coldest
Precipitation
93 mm
9.8 wet days
Daylight
9 h 18 min
7:37 AM – 4:55 PM
Cloud cover
54%
8th clearest
Wind
5 km/h
7th windiest
Solar energy
1.94 kWh/m²
Travel score
1.6
out of 10
Air quality
Elevated
PM2.5 17 µg/m³ · 2019

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 8°C through the month.

A typical January day in Frosinone reaches about 8°C in the afternoon and slips back to 0°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 4°C and 12°C. Set against its neighbours, January runs about 1°C cooler than December and about 1°C cooler than February.

-10°-5°10°15°151015202531
Avg high (°C)Avg low (°C)
180
280
380
480
580
680
780
890
990
1090
1190
1290
1390
1480
1580
1680
1780
1880
1980
2080
2180
2280
2380
2480
2580
2680
2780
2880
2980
3090
3190

How January really feels in Frosinone

Once humidity and wind are folded in, January averages 0 days that feel above 32°C and 31 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
31
wind chill below the day's low

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

Frosinone weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 939.81.69.31.6
Feb / 10010.3210.32.0
Mar13° / 11111.21.511.73.4
Apr16° / 12413.70.413.14.4
May20° / 10°10212.2014.36.1
Jun25° / 13°699.20157.2
Jul28° / 16°466.9014.77.2
Aug28° / 16°447.5013.76.8
Sep23° / 13°11210.9012.36.8
Oct19° / 14511.7010.95.8
Nov13° / 173130.29.73.5
Dec / 13810.91.191.9

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 12% of January, with mostly cloudy or overcast conditions the remaining 49%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15347
25347
35446
45347
55347
65347
75347
85347
95347
105347
115347
125347
135347
145248
155248
165149
175149
185149
195050
205050
214951
225050
235050
244951
254852
264852
274852
284852
294951
304951
315050

Chance of precipitation in January

Any precipitationSnow

Frosinone gets around 93 mm of rain and snow over 9.8 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 32% and peaks near 36% on the wettest days, and about 2 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1325
2314
3314
4304
5304
6293
7293
8293
9293
10293
11293
12293
13303
14303
15313
16314
17324
18324
19335
20335
21346
22346
23347
24347
25358
26358
27359
28359
29359
30369
31369

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January 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 (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in January

Winds average 5 km/h in January.

Across January, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 hours at the start of January to 9 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over January. Sunrise moves from 7:39 AM to 7:28 AM, and sunset from 4:41 PM to 5:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.07:394:41
29.07:394:41
39.17:394:42
49.17:394:43
59.17:394:44
69.17:394:45
79.17:394:46
89.17:394:47
99.17:394:48
109.27:394:49
119.27:394:50
129.27:384:51
139.27:384:52
149.27:384:53
159.37:374:54
169.37:374:55
179.37:374:56
189.37:364:57
199.47:364:58
209.47:354:59
219.47:355:00
229.57:345:02
239.57:345:03
249.57:335:04
259.57:325:05
269.67:325:06
279.67:315:07
289.67:305:09
299.77:295:10
309.77:285:11
319.77:285:12

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 1.94 kWh/m².

For context, solar energy here swings from a low near 1.65 kWh/m² to a high of 6.93 kWh/m² in July across the year — January's 1.94 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
11.7Dim
21.7Dim
31.7Dim
41.7Dim
51.8Dim
61.8Dim
71.8Dim
81.8Dim
91.8Dim
101.8Dim
111.9Dim
121.9Dim
131.9Dim
141.9Dim
151.9Dim
161.9Dim
172.0Dim
182.0Dim
192.0Moderate
202.0Moderate
212.0Moderate
222.1Moderate
232.1Moderate
242.1Moderate
252.1Moderate
262.2Moderate
272.2Moderate
282.2Moderate
292.2Moderate
302.3Moderate
312.3Moderate
Planning a trip in January

Is January a good time to visit Frosinone?

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

1.6
Sightseeing
12th-best month of the year
0.0
Beach & pool
10th-best month of the year

January is a weaker month for outdoor sightseeing in Frosinone.

What to pack for Frosinone in January

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

In January, Frosinone sees daytime highs around 8°C and nights near 0°C. Pack a warm layer. Worth having: rain gear. About 10 days see rain.

a warm layerrain gear

Sea temperature near Frosinone in January

The nearest coast averages about 15°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 49 km away) is warmest in August at about 26°C and coldest in February near 14°C.

It's comfortable for a long swim from May 29 to Nov 4 — about 5.3 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb14Bracing
Mar14Bracing
Apr16Cool
May19Cool
Jun22Refreshing
Jul25Warm
Aug26Warm
Sep24Refreshing
Oct22Refreshing
Nov19Cool
Dec17Cool

UV index in Frosinone in January

LowModerateHighVery highExtreme

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

Under clear skies, the midday UV index in Frosinone peaks around July 15 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateVery highModerateLowJul 15UV 10Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5Moderate
Apr4Moderate
May7High
Jun9Very high
Jul10Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec1Low

Air quality in Frosinone in January

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Frosinone is worst in April — around 21 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Seasonal pattern from CAMS reanalysis, scaled to Frosinone's WHO annual average of 17 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1121 µg/m³Nov 1715 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb18Moderate
Mar20Moderate
Apr21Moderate
May17Moderate
Jun17Moderate
Jul15Moderate
Aug18Moderate
Sep15Moderate
Oct15Moderate
Nov15Moderate
Dec15Moderate
Location & terrain

Where is Frosinone?

Frosinone sits at 41.6°N, 13.3°E, 291 m above sea level, in Italy. The nearest listed city is Sora, 24 km away.

Topography around Frosinone

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Frosinone.

Within 3 km, the terrain around Frosinone has only modest variations in elevation — a maximum elevation change of 162 m around an average of 192 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,425 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,771 m.

The land around Frosinone is covered by trees (51%) and artificial surfaces (29%) within 3 km, trees (64%) within 16 km, and trees (48%) and water (22%) within 80 km.

3 km
162 m
16 km
1,425 m
80 km
2,771 m
treesshrubsgrasslandcroplandartificial surfaceswater
January weather nearby: Sora 24 km · Sezze 28 km · Colleferro 30 km · Fondi 32 km · Terracina 40 km · Latina 41 km · Cisterna di Latina 43 km · Avezzano 44 km

Italy travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F / L
230 V · 50 Hz
Prices
≈ 69% of US
price level, 2025
GDP per capita
$43,309
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
97%
of population, 2024
Homicide rate
0.6
per 100k, 2023
Road deaths
5.3
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 513
Religion
Christian 81%unaffiliated 13%Muslim 5%other 1%

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 Frosinone (41.6398°, 13.3411°, elevation 291 m), 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).