Flower Mound in Summer
In summer (June, July and August), Flower Mound sees average daytime highs around 92°F and overnight lows near 75°F, with 7.0 in of rain over about 18 wet days across the season. It is the warmest season of the year and the driest season of the year.
Over the season highs climb from about 87°F in early June to 92°F by late August. The sky is clear or mostly clear about 54% of the time across summer, and the air most often feels muggy.
Summer is Flower Mound's weakest season of the year to visit on our travel score. For the whole year in context, see Flower Mound's year-round climate.
- Avg daytime high
- 92°F
- warmest season of the year
- Avg overnight low
- 75°F
- Rainfall
- 7.0 in
- 18 wet days
- Avg wind
- 7 mph
- Travel score
- 3.6
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Flower Mound in Summer
Over the season highs climb from about 87°F in early June to 92°F by late August.
A typical summer day in Flower Mound reaches about 92°F and drops to 75°F overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Flower Mound
Once humidity and wind are folded in, summer brings about 90 days that feel above 90°F and 0 that feel at or below 32°F.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Flower Mound weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 56° / 38° | 2.7 | 6.9 | 0.5 | 10.1 | 4.1 |
| Feb | 60° / 41° | 2.7 | 7.1 | 0.6 | 10.8 | 5.2 |
| Mar | 67° / 49° | 3.7 | 8.9 | 0.2 | 11.7 | 6.5 |
| Apr | 75° / 56° | 4.1 | 8.2 | 0 | 12.8 | 7.2 |
| May | 82° / 65° | 5.2 | 10.9 | 0 | 13.7 | 6.0 |
| Jun | 90° / 73° | 3.2 | 7.7 | 0 | 14.1 | 4.3 |
| Jul | 94° / 76° | 1.8 | 5.4 | 0 | 14 | 3.2 |
| Aug | 94° / 76° | 2.0 | 5.2 | 0 | 13.2 | 3.3 |
| Sep | 87° / 69° | 2.8 | 6.1 | 0 | 12.2 | 5.3 |
| Oct | 77° / 58° | 3.8 | 7.5 | 0 | 11.2 | 7.4 |
| Nov | 66° / 47° | 3.5 | 6.8 | 0.1 | 10.3 | 6.7 |
| Dec | 57° / 40° | 3.4 | 6.9 | 0.3 | 9.9 | 4.5 |
Cloud cover in Summer
The sky is clear or mostly clear about 54% of the time across summer.
Chance of precipitation in Summer
Flower Mound gets around 7.0 in of rain over 18 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 7 mph across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 hours in early June to 12 h 42 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 6.5 kWh/m².
Hazard calendar for Flower Mound
In summer, Flower Mound overlaps its atlantic hurricane season. The full year is below, with each hazard's peak months called out.
Flower Mound sits in the Atlantic hurricane belt; the season peaks August–October.
Is summer a good time to visit Flower Mound?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a weaker month for outdoor sightseeing in Flower Mound. The water and warmth also suit a beach or pool day.
What to pack for Flower Mound in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Flower Mound sees daytime highs around 92°F and nights near 75°F. Pack light clothes and sun protection. About 18 days see rain.
UV index in Flower Mound in Summer
Clear-sky midday UV across summer averages around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Flower Mound peaks around July 14 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 3 | 5 | 6 | 9 | 9 | 10 | 10 | 10 | 7 | 6 | 4 | 3 |
| Level | Moderate | Moderate | High | Very high | Very high | Extreme | Extreme | Very high | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 3 | Moderate |
| Feb | 5 | Moderate |
| Mar | 6 | High |
| Apr | 9 | Very high |
| May | 9 | Very high |
| Jun | 10 | Extreme |
| Jul | 10 | Extreme |
| Aug | 10 | Very high |
| Sep | 7 | Very high |
| Oct | 6 | High |
| Nov | 4 | Moderate |
| Dec | 3 | Moderate |
Air quality in Flower Mound in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Flower Mound is worst in July — around 19 µg/m³ PM2.5 (moderate), about 2.6× the cleanest month (October, 8 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 8 | 8 | 10 | 11 | 14 | 16 | 19 | 15 | 11 | 8 | 8 | 8 |
| Level | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 8 | Good |
| Mar | 10 | Good |
| Apr | 11 | Good |
| May | 14 | Moderate |
| Jun | 16 | Moderate |
| Jul | 19 | Moderate |
| Aug | 15 | Moderate |
| Sep | 11 | Good |
| Oct | 8 | Good |
| Nov | 8 | Good |
| Dec | 8 | Good |
Where is Flower Mound?
Flower Mound sits at 33.0°N, 97.1°W, 604 ft above sea level, in United States. The nearest listed city is Southlake, 5.6 mi away.
Topography around Flower Mound
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Flower Mound.
Within 2 miles, the terrain around Flower Mound has only modest variations in elevation — a maximum elevation change of 157 ft around an average of 597 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 387 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,043 ft.
The land around Flower Mound is covered by trees (37%), artificial surfaces (25%) and water (21%) within 2 miles, trees (32%), artificial surfaces (31%) and grassland (25%) within 10 miles, and grassland (49%) and trees (25%) within 50 miles.
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
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 Flower Mound (33.0146°, -97.097°, elevation 604 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.