Rancho Penasquitos in Summer
In summer (June, July and August), Rancho Penasquitos sees average daytime highs around 80°F and overnight lows near 62°F, with 0.4 in of rain over about 2 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 74°F in early June to 84°F by late August. The sky is clear or mostly clear about 85% of the time across summer, and the air most often feels comfortable.
Summer is Rancho Penasquitos's best season of the year to visit on our travel score. For the whole year in context, see Rancho Penasquitos's year-round climate.
- Avg daytime high
- 80°F
- warmest season of the year
- Avg overnight low
- 62°F
- Rainfall
- 0.4 in
- 2 wet days
- Avg wind
- 4 mph
- Travel score
- 8.6
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Rancho Penasquitos in Summer
Over the season highs climb from about 74°F in early June to 84°F by late August.
A typical summer day in Rancho Penasquitos reaches about 80°F and drops to 62°F overnight. The warmest of the three months is August, the coolest June.
Rancho Penasquitos 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 | 64° / 44° | 2.9 | 6.2 | 10.1 | 6.7 |
| Feb | 64° / 46° | 3.8 | 7.4 | 10.8 | 6.3 |
| Mar | 66° / 48° | 2.5 | 6.4 | 11.7 | 6.8 |
| Apr | 69° / 51° | 1.2 | 4.4 | 12.8 | 7.6 |
| May | 72° / 55° | 0.6 | 2.6 | 13.7 | 8.3 |
| Jun | 77° / 59° | 0.1 | 0.6 | 14.1 | 9.2 |
| Jul | 81° / 64° | 0.1 | 1 | 14 | 8.6 |
| Aug | 83° / 65° | 0.1 | 0.5 | 13.2 | 7.9 |
| Sep | 82° / 63° | 0.2 | 1 | 12.2 | 8.3 |
| Oct | 77° / 57° | 0.8 | 2.8 | 11.2 | 8.6 |
| Nov | 70° / 50° | 1.3 | 3.7 | 10.3 | 7.9 |
| Dec | 64° / 44° | 2.3 | 5.4 | 9.9 | 6.7 |
Cloud cover in Summer
The sky is clear or mostly clear about 85% of the time across summer.
Chance of precipitation in Summer
Rancho Penasquitos gets around 0.4 in of rain over 2 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 4 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 Rancho Penasquitos?
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 one of the better times to visit Rancho Penasquitos for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Rancho Penasquitos in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Rancho Penasquitos sees daytime highs around 80°F and nights near 62°F. Pack light clothes and sun protection.
Sea temperature near Rancho Penasquitos in Summer
The nearest coast averages about 68°F across summer — 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 70°F and coldest in February near 59°F.
It's comfortable for a long swim from Jul 8 to Oct 6 — about 3 months when the water holds above 68°F.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 60 | 59 | 60 | 61 | 64 | 66 | 69 | 70 | 70 | 67 | 64 | 61 |
| Comfort | Cool | Cool | Cool | Cool | Cool | Cool | Refreshing | Refreshing | Refreshing | Cool | Cool | Cool |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 60 | Cool |
| Feb | 59 | Cool |
| Mar | 60 | Cool |
| Apr | 61 | Cool |
| May | 64 | Cool |
| Jun | 66 | Cool |
| Jul | 69 | Refreshing |
| Aug | 70 | Refreshing |
| Sep | 70 | Refreshing |
| Oct | 67 | Cool |
| Nov | 64 | Cool |
| Dec | 61 | Cool |
UV index in Rancho Penasquitos in Summer
Clear-sky midday UV across summer averages 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 Rancho Penasquitos peaks around June 23 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 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 | 11 | 10 | 8 | 6 | 4 | 3 |
| Level | Moderate | Moderate | High | Very high | Very high | Extreme | Extreme | Extreme | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 4 | Moderate |
| Feb | 5 | Moderate |
| Mar | 5 | High |
| Apr | 8 | Very high |
| May | 8 | Very high |
| Jun | 11 | Extreme |
| Jul | 11 | Extreme |
| Aug | 10 | Extreme |
| Sep | 8 | Very high |
| Oct | 6 | High |
| Nov | 4 | Moderate |
| Dec | 3 | Moderate |
Air quality in Rancho Penasquitos 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 Rancho Penasquitos is worst in September — around 26 µg/m³ PM2.5 (moderate), about 3.4× the cleanest month (May, 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) | 12 | 12 | 12 | 11 | 8 | 11 | 11 | 15 | 26 | 14 | 12 | 16 |
| Level | Good | Moderate | Moderate | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 12 | Good |
| Feb | 12 | Moderate |
| Mar | 12 | Moderate |
| Apr | 11 | Good |
| May | 8 | Good |
| Jun | 11 | Good |
| Jul | 11 | Good |
| Aug | 15 | Moderate |
| Sep | 26 | Moderate |
| Oct | 14 | Moderate |
| Nov | 12 | Moderate |
| Dec | 16 | Moderate |
Where is Rancho Penasquitos?
Rancho Penasquitos sits at 33.0°N, 117.1°W, 600 ft above sea level, in United States. The nearest listed city is Mira Mesa, 3.7 mi away.
Topography around Rancho Penasquitos
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Rancho Penasquitos.
Within 2 miles, the terrain around Rancho Penasquitos has significant variations in elevation — a maximum elevation change of 1,302 ft around an average of 617 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,835 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 6,450 ft.
The land around Rancho Penasquitos is covered by artificial surfaces (45%), trees (25%) and shrubs (22%) within 2 miles, artificial surfaces (29%), trees (26%) and shrubs (24%) within 10 miles, and shrubs (27%) and water (27%) 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 Rancho Penasquitos (32.9595°, -117.1153°, elevation 600 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.