Tysons weather in July

In July, Tysons sees average daytime highs of 88°F and overnight lows near 70°F, with 4.1 in of rain across 11.7 wet days and about 14.4 hours of daylight. It is the 1st-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 88°F through the month. The sky is clear or mostly clear about 27% of the time in July, and the air most often feels muggy.

Daylight stretches from about 14 h 42 min at the start of July to 14 h 06 min by month's end. Set against the rest of the year, July is Tysons's 5th-clearest and 11th-windiest month. For the whole year in context, see Tysons's year-round climate.

Daytime high
88°
1st warmest
Overnight low
70°
12th coldest
Rainfall
4.1 in
11.7 wet days
Daylight
14 h 30 min
5:00 AM – 7:29 PM
Cloud cover
59%
5th clearest
Wind
5 mph
11th windiest
Solar energy
5.99 kWh/m²
Travel score
4.3
out of 10

Tysons is unincorporated census-designated place in Fairfax County, Virginia, United States.

Density
1,774/km²
people per km²

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 88°F through the month.

A typical July day in Tysons reaches about 88°F in the afternoon and slips back to 70°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 80°F and 96°F. Set against its neighbours, July runs about 4°F warmer than June and about 2°F warmer than August.

60°70°80°90°100°151015202531
Avg high (°F)Avg low (°F)
18769
28769
38769
48769
58769
68769
78869
88870
98870
108870
118870
128870
138870
148870
158870
168870
178870
188871
198871
208871
218871
228871
238871
248871
258871
268870
278770
288770
298770
308770
318770

How July really feels in Tysons

Once humidity and wind are folded in, July averages 10 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
10
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

The story in July is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Tysons weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan42° / 28°3.18.439.60.3
Feb46° / 29°2.88.32.810.51.1
Mar54° / 36°3.910.21.911.73.3
Apr65° / 47°3.410.10.1135.8
May74° / 56°3.911.4014.16.5
Jun83° / 65°3.611.2014.75.5
Jul88° / 70°4.111.7014.44.3
Aug85° / 68°3.610.8013.55.0
Sep78° / 61°4.59.3012.36.8
Oct67° / 49°3.57.80116.5
Nov56° / 39°3.07.50.29.93.9
Dec46° / 32°3.591.89.31.4

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 23% of July, with mostly cloudy or overcast conditions the remaining 50%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
25050
34951
45050
55050
65050
75149
85149
95149
105248
115248
125248
135248
145248
155248
165248
175149
185149
195050
205050
215050
224951
234951
244951
255050
264951
274951
284852
294852
304951
314852

Chance of precipitation in July

Any precipitation

Tysons gets around 4.1 in of rain over 11.7 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 38% and peaks near 40% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
139
239
339
438
538
637
737
836
936
1036
1135
1235
1335
1435
1536
1636
1737
1837
1938
2038
2139
2239
2340
2440
2540
2640
2740
2840
2939
3039
3139

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the muggy band about 35% of days. Sticky, muggy-or-worse air turns up on roughly 54% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11416223117
21416223117
31416223117
41415223117
51315223118
61314233218
71314233218
81314233218
91213233318
101213233318
111113243418
121113243418
131013243518
141013243518
15912243619
16912243619
17812243619
18812243720
19712233720
20712233720
21612233721
22612233821
23611233821
24611233822
25611233822
26611233822
27611233822
28611233722
29712233721
30712233721
31712233621

Wind in July

Winds average 5 mph in July.

Across July, daily wind ranges from about 5 mph on the calmest days to 5 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)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 July

DaylightNight

Daylight runs from about 14 h 42 min at the start of July to 14 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over July. Sunrise moves from 4:51 AM to 5:12 AM, and sunset from 7:33 PM to 7:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.74:517:33
214.74:527:33
314.74:527:33
414.74:537:33
514.74:537:33
614.64:547:33
714.64:547:32
814.64:557:32
914.64:557:32
1014.64:567:31
1114.64:577:31
1214.64:577:31
1314.54:587:30
1414.54:597:30
1514.54:597:29
1614.55:007:29
1714.55:017:28
1814.45:027:28
1914.45:027:27
2014.45:037:27
2114.45:047:26
2214.35:057:25
2314.35:067:24
2414.35:067:24
2514.35:077:23
2614.25:087:22
2714.25:097:21
2814.25:107:20
2914.15:117:20
3014.15:127:19
3114.15:127:18

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.99 kWh/m².

For context, solar energy here swings from a low near 1.95 kWh/m² to a high of 6.14 kWh/m² in June across the year — July's 5.99 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.2Intense
56.2Intense
66.2Intense
76.2Intense
86.2Intense
96.2Intense
106.2Intense
116.2Intense
126.2Intense
136.2Intense
146.1Intense
156.1Intense
166.1Intense
176.0Intense
186.0Intense
196.0Bright
206.0Bright
215.9Bright
225.9Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
315.6Bright
Planning a trip in July

Hazard calendar for Tysons

In seasonPeak

In July, Tysons sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

Tysons sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is July a good time to visit Tysons?

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

4.3
Sightseeing
7th-best month of the year
6.4
Beach & pool
4th-best month of the year

July is a reasonable time to visit Tysons for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Tysons in July

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

In July, Tysons sees daytime highs around 88°F and nights near 70°F. Pack light clothes. Worth having: rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

UV index in Tysons in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Tysons 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
Aug7High
Sep6High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Tysons in July

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Tysons 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 Tysons?

Tysons sits at 38.9°N, 77.2°W, 486 ft above sea level, in United States. The nearest listed city is Idylwood, 1.9 mi away.

Topography around Tysons

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

Within 2 miles, the terrain around Tysons has only modest variations in elevation — a maximum elevation change of 282 ft around an average of 404 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 564 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,533 ft.

The land around Tysons is covered by trees (64%) and artificial surfaces (30%) within 2 miles, trees (78%) within 10 miles, and trees (62%) within 50 miles.

2 miles
282 ft
10 miles
564 ft
50 miles
2,533 ft
treesgrasslandcroplandartificial surfaceswater
July weather nearby: Idylwood 1.9 mi · Vienna 2.5 mi · Merrifield 3.1 mi · McLean 3.1 mi · Wolf Trap 3.1 mi · West Falls Church 4.3 mi · Oakton 4.3 mi · Great Falls 6.2 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 Tysons (38.9187°, -77.2311°, elevation 486 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).