Imperial, United States experiences average highs of 33°C (91°F) and lows of 17°C (63°F) throughout the year. The climate is relatively dry, with only 1 rainy days per month on average. Sunshine is abundant, averaging about 11 hours per day. Average highs have stayed broadly stable across the available records.
Imperial, United States Weather & Climate 2026
Monthly climate averages for Imperial, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Mar–Nov 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
7.6/10
Best: March, April, May, October, November
UV Index
7
High
Temperature 33°C / 17°C
Feels Like 31°C / 15°C
Rainy Days 1
Rainfall 7 mm
Sunshine 11 h
Humidity 32%
Wind Speed 15 km/h
Dew Point 6°C
Hottest Month
44°C
July
Avg Low28°C
Rain2days
Coldest Month
8°C
January
Avg High21°C
Rain2days
Driest Month
0days
May
Avg High36°C
Avg Low18°C
Windiest Month
18 km/h
April (Gusts 39)
Worst Time to Visit
Consider avoiding July, August due to extreme heat.
Sun Position
Sunrise 05:35
Daylight 14.3h
Sunset 19:53
Live conditions—
Imperial on the map · live conditions
Imperial, United States
- Continent
- Americas
- Country
- United States
- City
- Imperial
- Population
- 17.1K
- Elevation
- -18 m
- Coordinates
- 32.85°, -115.57°
Seasonal Breakdown
Spring
Mar–May
Avg High 32°C
Avg Low 15°C
Rain 1 days/mo
3/3 best months
Summer
Jun–Aug
Avg High 43°C
Avg Low 26°C
Rain 2 days/mo
Autumn
Sep–Nov
Avg High 33°C
Avg Low 17°C
Rain 1 days/mo
2/3 best months
Winter
Dec–Feb
Avg High 22°C
Avg Low 9°C
Rain 2 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 21°C / 8°C . Feb: 24°C / 9°C . Mar: 27°C / 12°C . Apr: 33°C / 15°C . May: 36°C / 18°C . Jun: 42°C / 23°C . Jul: 44°C / 28°C . Aug: 43°C / 28°C . Sep: 39°C / 23°C . Oct: 34°C / 17°C . Nov: 26°C / 12°C . Dec: 21°C / 9°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 9 mm. Feb: 9 mm. Mar: 8 mm. Apr: 3 mm. May: 1 mm. Jun: 2 mm. Jul: 6 mm. Aug: 11 mm. Sep: 11 mm. Oct: 3 mm. Nov: 6 mm. Dec: 11 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 42%. Feb: 35%. Mar: 35%. Apr: 27%. May: 27%. Jun: 23%. Jul: 25%. Aug: 29%. Sep: 32%. Oct: 29%. Nov: 34%. Dec: 41%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 13 km/h . Feb: 15 km/h . Mar: 18 km/h . Apr: 18 km/h . May: 18 km/h . Jun: 16 km/h . Jul: 15 km/h . Aug: 14 km/h . Sep: 14 km/h . Oct: 13 km/h . Nov: 12 km/h . Dec: 12 km/h .
Sunshine
Sunshine
Sunshine: Jan: 9h. Feb: 10h. Mar: 11h. Apr: 12h. May: 13h. Jun: 13h. Jul: 13h. Aug: 12h. Sep: 11h. Oct: 10h. Nov: 9h. Dec: 8h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 4. Feb: UV 5. Mar: UV 7. Apr: UV 8. May: UV 8. Jun: UV 9. Jul: UV 9. Aug: UV 8. Sep: UV 7. Oct: UV 6. Nov: UV 5. Dec: UV 4.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall has remained broadly steady.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Aug 2025 · 44°C | Jul · 44°C |
| Coldest month | Jan 2025 · 7°C | Jan · 8°C |
| Wettest month | Nov 2025 · 29 mm | Aug · 11 mm |
| Windiest month | Mar 2025 · 20 km/h | Apr · 18 km/h |
Month-by-Month Weather Table
January
Good 
February
Excellent March best
Excellent April best
Excellent May best
Excellent June
Fair July
Poor August
Poor September
Fair October best
Excellent November best
Excellent December
Good | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 21°C / 8°C | 18°C / 5°C | 2days (9 mm) Excellent | 8.9h Good | 42% Moderate | 4 Moderate | Good | View Details |
| February | 24°C / 9°C | 21°C / 6°C | 2days (9 mm) Excellent | 9.6h Good | 35% Comfortable | 5.1 High | Excellent | View Details |
| March best | 27°C / 12°C | 24°C / 9°C | 1days (8 mm) Excellent | 10.8h Excellent | 35% Comfortable | 6.5 High | Excellent | View Details |
| April best | 33°C / 15°C | 30°C / 12°C | 1days (3 mm) Excellent | 12h Excellent | 27% Comfortable | 7.8 Very High | Excellent | View Details |
| May best | 36°C / 18°C | 34°C / 16°C | 0days (1 mm) Excellent | 12.8h Excellent | 27% Comfortable | 8.4 Very High | Excellent | View Details |
| June | 42°C / 23°C | 41°C / 22°C | 0days (2 mm) Excellent | 13.2h Excellent | 23% Comfortable | 8.6 Very High | Fair | View Details |
| July | 44°C / 28°C | 45°C / 28°C | 2days (6 mm) Excellent | 12.9h Excellent | 25% Comfortable | 8.6 Very High | Poor | View Details |
| August | 43°C / 28°C | 44°C / 28°C | 3days (11 mm) Excellent | 12.2h Excellent | 29% Comfortable | 8.1 Very High | Poor | View Details |
| September | 39°C / 23°C | 39°C / 23°C | 2days (11 mm) Excellent | 11.2h Excellent | 32% Comfortable | 7.3 Very High | Fair | View Details |
| October best | 34°C / 17°C | 32°C / 15°C | 1days (3 mm) Excellent | 10.4h Excellent | 29% Comfortable | 6 High | Excellent | View Details |
| November best | 26°C / 12°C | 23°C / 9°C | 1days (6 mm) Excellent | 9.2h Good | 34% Comfortable | 4.5 Moderate | Excellent | View Details |
| December | 21°C / 9°C | 18°C / 6°C | 2days (11 mm) Excellent | 8.4h Good | 41% Moderate | 3.7 Moderate | Good | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Imperial are March, April, May, October, November, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Imperial, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Imperial is July, with average daytime highs of 44°C (112°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Imperial is January, with average overnight lows of 8°C (46°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Imperial is August, averaging 11mm of precipitation across 3 rainy days. An umbrella or waterproof jacket is essential.
Imperial receives approximately 132 sunshine hours per year. The sunniest month is June with around 13 hours. Based on climate data for Imperial.
The least favorable months to visit Imperial are July, August, primarily due to extreme heat. For the best conditions, consider March, April, May, October, November instead.
The annual average UV index in Imperial is 7, classified as high. SPF 30+ sunscreen, sunglasses, and seeking shade between 10:00–16:00 are strongly recommended.
Average humidity in Imperial is 32%, classified as dry. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Average wind speeds in Imperial are 15 km/h (9 mph). The windiest month is April with peak winds reaching 18 km/h (11 mph) (gusts up to 39 km/h / 24 mph).
Imperial averages 18 clear-sky days per month with overall cloud cover around 23%. The clearest skies occur in October.
The annual average dew point in Imperial is 6°C (43°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Imperial has a Hot Desert climate, classified as BWh under the Köppen system. Arid climates have very low rainfall relative to temperature, with large swings between daytime heat and cool nights.
The 'feels like' temperature in Imperial ranges from 15°C (59°F) to 31°C (88°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
June is not the best time to visit Imperial, with a climate score of 5.8/10. Consider visiting during March, April, May, October, November instead for better conditions.
For June in Imperial, pack Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses, Sandals. With average highs of 42°C (107°F) and 0 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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