Keystone weather in July

In July, Keystone sees average daytime highs of 89°F and overnight lows near 76°F, with 5.0 in of rain across 18.3 wet days and about 13.6 hours of daylight. It is the 2nd-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 89°F through the month. The sky is clear or mostly clear about 15% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 13 h 48 min at the start of July to 13 h 24 min by month's end. Set against the rest of the year, July is Keystone's 12th-clearest and 12th-windiest month. For the whole year in context, see Keystone's year-round climate.

Daytime high
89°
2nd warmest
Overnight low
76°
12th coldest
Rainfall
5.0 in
18.3 wet days
Daylight
13 h 36 min
5:47 AM – 7:25 PM
Cloud cover
69%
12th clearest
Wind
5 mph
12th windiest
Solar energy
5.74 kWh/m²
Travel score
3.2
out of 10

Keystone is census-designated place in Hillsborough County, Florida, United States.

Density
237/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 89°F through the month.

A typical July day in Keystone reaches about 89°F in the afternoon and slips back to 76°F overnight — a 14°F spread between the day's warmth and the night's chill. On most days the high lands between 85°F and 93°F. Set against its neighbours, July runs on par with June and on par with August.

70°80°90°151015202531
Avg high (°F)Avg low (°F)
18975
28975
38975
48975
58975
68975
78975
88975
98975
108975
118976
128976
138976
148976
158976
168976
178976
188976
198976
208976
218976
228976
238976
248976
258976
268976
278976
288976
298976
308976
318976

How July really feels in Keystone

Once humidity and wind are folded in, July averages 31 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
31
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.

Keystone weather by month

How July compares with the rest of the year at a glance. July is the 2nd-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan69° / 51°2.56.510.47.1
Feb72° / 53°2.26.3117.4
Mar76° / 57°2.56.311.87.7
Apr82° / 63°2.1612.77.0
May87° / 69°2.37.313.45.3
Jun89° / 74°5.016.413.83.6
Jul89° / 76°5.018.313.63.2
Aug89° / 76°5.619.8133.1
Sep88° / 74°4.614.712.23.8
Oct84° / 67°2.17.211.36.2
Nov77° / 58°1.44.310.67.9
Dec72° / 54°2.2610.27.5

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in July, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 21% of July, with mostly cloudy or overcast conditions the remaining 63%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13763
23664
33763
43763
53664
63763
73763
83862
93862
103862
113763
123763
133763
143763
153763
163664
173664
183664
193565
203664
213664
223664
233664
243664
253664
263565
273565
283565
293565
303565
313565

Chance of precipitation in July

Any precipitation

Keystone gets around 5.0 in of rain over 18.3 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 60% and peaks near 61% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
159
259
359
459
559
659
760
860
960
1060
1160
1261
1361
1461
1561
1661
1761
1861
1961
2061
2160
2260
2360
2459
2559
2659
2760
2860
2960
3060
3161

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the oppressive band about 78% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11157410
20147610
30147511
40137611
50127711
60117712
70117712
80107812
9097813
10097813
11087913
12087913
13087913
14087913
15078013
16078013
17078013
18077914
19077914
20077914
21077914
22077914
23177913
24168013
25168013
26168013
27168013
28167914
29167914
30158014
31158014

Wind in July

Winds average 5 mph in July, the calmest month.

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 13 h 48 min at the start of July to 13 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over July. Sunrise moves from 5:41 AM to 5:55 AM, and sunset from 7:27 PM to 7:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:417:27
213.85:417:27
313.85:427:27
413.75:427:27
513.75:427:27
613.75:437:27
713.75:437:27
813.75:447:27
913.75:447:26
1013.75:447:26
1113.75:457:26
1213.75:457:26
1313.75:467:26
1413.75:467:25
1513.65:477:25
1613.65:477:25
1713.65:487:25
1813.65:487:24
1913.65:497:24
2013.65:497:24
2113.65:507:23
2213.55:507:23
2313.55:517:22
2413.55:527:22
2513.55:527:21
2613.55:537:21
2713.55:537:20
2813.45:547:20
2913.45:547:19
3013.45:557:18
3113.45:557:18

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.74 kWh/m².

For context, solar energy here swings from a low near 3.15 kWh/m² to a high of 6.46 kWh/m² in May across the year — July's 5.74 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.6Bright
265.6Bright
275.6Bright
285.6Bright
295.6Bright
305.6Bright
315.5Bright
Planning a trip in July

Hazard calendar for Keystone

In seasonPeak

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

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

Keystone's rainy season runs March–March, when most of the year's rain falls.

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

Is July a good time to visit Keystone?

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

3.2
Sightseeing
11th-best month of the year
5.1
Beach & pool
10th-best month of the year

July is a weaker month for outdoor sightseeing in Keystone.

What to pack for Keystone in July

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

In July, Keystone sees daytime highs around 89°F and nights near 76°F. Pack light clothes and rain gear. Worth having: sun protection. About 18 days see rain.

light clothesrain gearsun protection

Sea temperature near Keystone in July

The nearest coast averages about 85°F in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 16 mi away) is warmest in August at about 86°F and coldest in February near 63°F.

It's comfortable for a long swim from Mar 21 to Dec 11 — about 8.7 months when the water holds above 68°F.

60°70°80°90°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan64Cool
Feb63Cool
Mar67Cool
Apr73Refreshing
May78Warm
Jun83Tropical
Jul85Tropical
Aug86Tropical
Sep84Tropical
Oct80Warm
Nov73Refreshing
Dec67Cool

UV index in Keystone in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Keystone peaks around July 12 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighModerateJul 12UV 11Dec 19UV 4
UV index (midday)Level
Jan5Moderate
Feb7High
Mar8Very high
Apr9Very high
May9Very high
Jun11Extreme
Jul11Extreme
Aug10Very high
Sep9Very high
Oct7Very high
Nov5High
Dec4Moderate

Air quality in Keystone 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 Keystone is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (November, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1918 µg/m³Nov 169 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar10Good
Apr11Good
May11Good
Jun16Moderate
Jul18Moderate
Aug17Moderate
Sep12Moderate
Oct9Good
Nov9Good
Dec9Good
Location & terrain

Where is Keystone?

Keystone sits at 28.2°N, 82.6°W, 39 ft above sea level, in United States. The nearest listed city is East Lake, 5.6 mi away.

Topography around Keystone

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

Within 2 miles, the terrain around Keystone has only modest variations in elevation — a maximum elevation change of 98 ft around an average of 49 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 138 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 374 ft.

The land around Keystone is covered by trees (46%) and grassland (39%) within 2 miles, trees (56%) and artificial surfaces (20%) within 10 miles, and trees (39%) and water (37%) within 50 miles.

2 miles
98 ft
10 miles
138 ft
50 miles
374 ft
treesgrasslandcroplandartificial surfaceswaterwetland
July weather nearby: East Lake 5.6 mi · Citrus Park 6.2 mi · Greater Northdale 6.8 mi · Westchase 6.8 mi · Holiday 7.5 mi · Northdale 8.1 mi · Tarpon Springs 8.1 mi · New Port Richey 8.7 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 Keystone (28.1559°, -82.6212°, elevation 39 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). 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).