Imperial in Summer
In summer (June, July and August), Imperial sees average daytime highs around 107°F and overnight lows near 79°F, with 0.6 in of rain over about 4 wet days across the season. It is the warmest season of the year and the 3rd-wettest season.
Over the season highs climb from about 101°F in early June to 106°F by late August. The sky is clear or mostly clear about 83% of the time across summer, and the air most often feels dry.
Summer is Imperial's weakest season of the year to visit on our travel score. For the whole year in context, see Imperial's year-round climate.
- Avg daytime high
- 107°F
- warmest season of the year
- Avg overnight low
- 79°F
- Rainfall
- 0.6 in
- 4 wet days
- Avg wind
- 5 mph
- Travel score
- 0.1
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Imperial in Summer
Over the season highs climb from about 101°F in early June to 106°F by late August.
A typical summer day in Imperial reaches about 107°F and drops to 79°F overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Imperial
Once humidity and wind are folded in, summer brings about 92 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.
Imperial 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 | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 71° / 48° | 0.4 | 1.7 | 10.1 | 8.4 |
| Feb | 75° / 50° | 0.5 | 2 | 10.8 | 8.7 |
| Mar | 82° / 54° | 0.3 | 1.1 | 11.8 | 7.9 |
| Apr | 88° / 59° | 0.1 | 0.5 | 12.8 | 5.8 |
| May | 96° / 66° | 0.0 | 0.2 | 13.7 | 3.1 |
| Jun | 104° / 73° | 0.0 | 0 | 14.1 | 0.4 |
| Jul | 109° / 81° | 0.2 | 1.5 | 13.9 | 0.0 |
| Aug | 108° / 82° | 0.3 | 2.5 | 13.2 | 0.0 |
| Sep | 102° / 75° | 0.4 | 1.4 | 12.2 | 0.8 |
| Oct | 91° / 64° | 0.2 | 0.7 | 11.2 | 4.8 |
| Nov | 79° / 53° | 0.2 | 0.6 | 10.3 | 8.6 |
| Dec | 70° / 47° | 0.4 | 1.5 | 9.9 | 8.2 |
Cloud cover in Summer
The sky is clear or mostly clear about 83% of the time across summer.
Chance of precipitation in Summer
Imperial gets around 0.6 in of rain over 4 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 5 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 7.8 kWh/m².
Is summer a good time to visit Imperial?
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 Imperial.
What to pack for Imperial in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Imperial sees daytime highs around 107°F and nights near 79°F. Pack light clothes and sun protection.
UV index in Imperial 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 Imperial peaks around June 21 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 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) | 4 | 5 | 5 | 8 | 8 | 11 | 10 | 10 | 8 | 6 | 4 | 3 |
| Level | Moderate | Moderate | Moderate | Very high | Very high | Extreme | Extreme | Extreme | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 4 | Moderate |
| Feb | 5 | Moderate |
| Mar | 5 | Moderate |
| Apr | 8 | Very high |
| May | 8 | Very high |
| Jun | 11 | Extreme |
| Jul | 10 | Extreme |
| Aug | 10 | Extreme |
| Sep | 8 | Very high |
| Oct | 6 | High |
| Nov | 4 | Moderate |
| Dec | 3 | Moderate |
Where is Imperial?
Imperial sits at 32.8°N, 115.6°W, -59 ft above sea level, in United States. The nearest listed city is El Centro, 3.7 mi away.
Topography around Imperial
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Imperial.
Within 2 miles, the terrain around Imperial has only modest variations in elevation — a maximum elevation change of 33 ft around an average of -62 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 315 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 6,545 ft.
The land around Imperial is covered by cropland (47%), bare terrain (27%) and artificial surfaces (22%) within 2 miles, cropland (69%) and bare terrain (21%) within 10 miles, and bare terrain (61%) 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 Imperial (32.8475°, -115.5694°, elevation -59 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.