Manassas Park weather in January

In January, Manassas Park sees average daytime highs of 43°F and overnight lows near 29°F, with 3.0 in of precipitation across 8.6 wet days and about 9.6 hours of daylight. It is the 12th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 43°F through the month. The sky is clear or mostly clear about 34% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 h 18 min at the start of January to 10 hours by month's end. Set against the rest of the year, January is Manassas Park's 4th-clearest and 3rd-windiest month. For the whole year in context, see Manassas Park's year-round climate.

Daytime high
43°
12th warmest
Overnight low
29°
1st coldest
Precipitation
3.0 in
8.6 wet days
Daylight
9 h 36 min
7:32 AM – 5:06 PM
Cloud cover
58%
4th clearest
Wind
7 mph
3rd windiest
Solar energy
2.28 kWh/m²
Travel score
0.6
out of 10

Manassas Park is independent city in Virginia, United States.

Density
2,391/km²
people per km²
Founded
1975

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 43°F through the month.

A typical January day in Manassas Park reaches about 43°F in the afternoon and slips back to 29°F overnight — a 15°F spread between the day's warmth and the night's chill. On most days the high lands between 30°F and 58°F. Set against its neighbours, January runs about 4°F cooler than December and about 3°F cooler than February.

20°40°60°151015202531
Avg high (°F)Avg low (°F)
14531
24530
34530
44530
54430
64430
74430
84430
94430
104429
114429
124329
134329
144329
154328
164328
174328
184328
194228
204228
214228
224227
234227
244227
254327
264327
274327
284327
294327
304328
314428

How January really feels in Manassas Park

Once humidity and wind are folded in, January 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
wind chill below the day's low

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

Manassas Park weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan43° / 29°3.08.62.89.60.6
Feb47° / 30°2.88.32.510.51.4
Mar55° / 37°3.810.51.711.73.6
Apr67° / 47°3.4100136.0
May75° / 56°3.711.2014.16.5
Jun84° / 65°3.411.1014.75.3
Jul88° / 70°3.711.8014.44.2
Aug86° / 69°3.310013.55.0
Sep79° / 61°4.49.1012.36.7
Oct68° / 49°3.37.60116.7
Nov56° / 39°2.97.60.29.94.2
Dec47° / 32°3.48.81.89.31.6

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 16% of January, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
25050
35050
45050
55050
64951
74951
84951
94951
104951
114852
124951
134951
144951
154951
164852
174852
184852
194852
204951
214951
224951
235050
244951
255050
265050
275050
285050
295050
305050
315050

Chance of precipitation in January

Any precipitationSnow

Manassas Park gets around 3.0 in of rain and snow over 8.6 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 28% and peaks near 31% on the wettest days, and about 3 days bring snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1276
2276
3287
4287
5297
6297
7307
8307
9308
10318
11318
12318
13308
14309
15309
16299
17299
18289
19289
202710
212710
222610
232610
242611
252611
262611
272611
282611
292611
302611
312611

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 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19901
29811
39811
49811
59811
69811
79811
89811
99811
109811
119811
129811
139811
149910
159910
169910
179910
189910
199910
209910
219910
229910
239910
249910
2510000
2610000
2710000
2810000
2910000
3010000
3110000

Wind in January

Winds average 7 mph in January.

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

0246810151015202531
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 h 18 min at the start of January to 10 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over January. Sunrise moves from 7:33 AM to 7:24 AM, and sunset from 4:53 PM to 5:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.37:334:53
29.37:334:54
39.37:334:54
49.47:344:55
59.47:344:56
69.47:344:57
79.47:344:58
89.47:344:59
99.47:344:59
109.47:335:00
119.57:335:01
129.57:335:02
139.57:335:03
149.57:335:04
159.57:325:05
169.67:325:06
179.67:325:07
189.67:325:08
199.67:315:09
209.77:315:10
219.77:305:11
229.77:305:12
239.77:295:13
249.87:295:15
259.87:285:16
269.87:285:17
279.87:275:18
289.97:265:19
299.97:265:20
309.97:255:21
3110.07:245:22

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.28 kWh/m².

For context, solar energy here swings from a low near 1.99 kWh/m² to a high of 6.15 kWh/m² in June across the year — January's 2.28 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.0Moderate
22.0Moderate
32.0Moderate
42.1Moderate
52.1Moderate
62.1Moderate
72.1Moderate
82.1Moderate
92.1Moderate
102.1Moderate
112.1Moderate
122.2Moderate
132.2Moderate
142.2Moderate
152.2Moderate
162.3Moderate
172.3Moderate
182.3Moderate
192.3Moderate
202.4Moderate
212.4Moderate
222.4Moderate
232.5Moderate
242.5Moderate
252.5Moderate
262.5Moderate
272.6Moderate
282.6Moderate
292.6Moderate
302.7Moderate
312.7Moderate
Planning a trip in January

Is January a good time to visit Manassas Park?

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

0.6
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 Manassas Park.

What to pack for Manassas Park in January

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

In January, Manassas Park sees daytime highs around 43°F and nights near 29°F. Pack a warm layer and a heavy coat. Worth having: rain gear. About 9 days see rain.

a warm layera heavy coatrain gear

UV index in Manassas Park in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Manassas Park peaks around July 11 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJul 11UV 9Dec 19UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar5High
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug7Very high
Sep6High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Manassas Park 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 Manassas Park is worst in July — around 17 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (November, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1317 µg/m³Nov 129 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb12Moderate
Mar13Moderate
Apr13Moderate
May15Moderate
Jun16Moderate
Jul17Moderate
Aug15Moderate
Sep12Moderate
Oct9Good
Nov9Good
Dec10Good
Location & terrain

Where is Manassas Park?

Manassas Park sits at 38.8°N, 77.5°W, 203 ft above sea level, in United States. The nearest listed city is Sudley, 1.9 mi away.

Topography around Manassas Park

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

Within 2 miles, the terrain around Manassas Park has only modest variations in elevation — a maximum elevation change of 187 ft around an average of 226 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 768 ft; within 50 miles, large variations in elevation — a maximum elevation change of 3,907 ft.

The land around Manassas Park is covered by trees (63%) and artificial surfaces (26%) within 2 miles, trees (70%) within 10 miles, and trees (68%) within 50 miles.

2 miles
187 ft
10 miles
768 ft
50 miles
3,907 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Sudley 1.9 mi · Manassas 2.5 mi · Buckhall 4.3 mi · Centreville 4.3 mi · Linton Hall 6.2 mi · Chantilly 8.1 mi · South Riding 9.9 mi · Fairfax 9.9 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 Manassas Park (38.784°, -77.4697°, elevation 203 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. 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).