Patterson, United States experiences average highs of 26°C (79°F) and lows of 12°C (54°F) throughout the year. The climate is relatively dry, with only 4 rainy days per month on average. Sunshine is abundant, averaging about 10 hours per day. Average highs have warmed by 0.6°C (1.1°F) across the available records.
Patterson, United States Weather & Climate 2026
Monthly climate averages for Patterson, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: May–Oct 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
7.9/10
Best: May, September, October
UV Index
6
High
Temperature 26°C / 12°C
Feels Like 25°C / 10°C
Rainy Days 4
Rainfall 37 mm
Sunshine 10 h
Humidity 54%
Wind Speed 13 km/h
Dew Point 9°C
Frost Days 1 days
Hottest Month
38°C
July
Avg Low19°C
Rain0days
Coldest Month
6°C
January
Avg High15°C
Rain9days
Driest Month
0days
June
Avg High35°C
Avg Low17°C
Windiest Month
15 km/h
May (Gusts 37)
Worst Time to Visit
Consider avoiding January, February, December due to less favorable weather conditions.
Sun Position
Sunrise 05:44
Daylight 14.7h
Sunset 20:28
Live conditions—
Patterson on the map · live conditions
Patterson, United States
- Continent
- Americas
- Country
- United States
- City
- Patterson
- Population
- 21.5K
- Elevation
- 31 m
- Coordinates
- 37.47°, -121.13°
Seasonal Breakdown
Spring
Mar–May
Avg High 24°C
Avg Low 10°C
Rain 6 days/mo
1/3 best months
Summer
Jun–Aug
Avg High 37°C
Avg Low 18°C
Rain 0 days/mo
Autumn
Sep–Nov
Avg High 27°C
Avg Low 13°C
Rain 3 days/mo
2/3 best months
Winter
Dec–Feb
Avg High 16°C
Avg Low 6°C
Rain 8 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: 15°C / 6°C . Feb: 17°C / 6°C . Mar: 19°C / 8°C . Apr: 24°C / 10°C . May: 29°C / 13°C . Jun: 35°C / 17°C . Jul: 38°C / 19°C . Aug: 37°C / 19°C . Sep: 34°C / 17°C . Oct: 28°C / 13°C . Nov: 20°C / 9°C . Dec: 15°C / 6°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 100 mm. Feb: 66 mm. Mar: 84 mm. Apr: 28 mm. May: 16 mm. Jun: 1 mm. Jul: 0 mm. Aug: 1 mm. Sep: 4 mm. Oct: 20 mm. Nov: 40 mm. Dec: 78 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 77%. Feb: 67%. Mar: 67%. Apr: 56%. May: 45%. Jun: 36%. Jul: 35%. Aug: 39%. Sep: 43%. Oct: 47%. Nov: 62%. Dec: 74%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 13 km/h . Feb: 15 km/h . Mar: 14 km/h . Apr: 14 km/h . May: 15 km/h . Jun: 15 km/h . Jul: 13 km/h . Aug: 13 km/h . Sep: 13 km/h . Oct: 13 km/h . Nov: 11 km/h . Dec: 11 km/h .
Sunshine
Sunshine
Sunshine: Jan: 7h. Feb: 9h. Mar: 9h. Apr: 11h. May: 13h. Jun: 14h. Jul: 14h. Aug: 13h. Sep: 11h. Oct: 10h. Nov: 8h. Dec: 7h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 4. Mar: UV 6. Apr: UV 7. May: UV 8. Jun: UV 8. Jul: UV 8. Aug: UV 8. Sep: UV 7. Oct: UV 5. Nov: UV 4. Dec: UV 3.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Climate Trends
Average highs have warmed by 0.6°C (1.1°F) across the available records. Average rainfall is trending drier by about 10 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Aug 2025 · 37°C | Jul · 38°C |
| Coldest month | Jan 2025 · 4°C | Jan · 6°C |
| Wettest month | Nov 2025 · 87 mm | Jan · 100 mm |
| Windiest month | May 2025 · 17 km/h | May · 15 km/h |
Month-by-Month Weather Table
January
Fair 
February
Fair March
Good April
Excellent May best
Excellent June
Excellent July
Good August
Good September best
Excellent October best
Excellent November
Good December
Fair | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 15°C / 6°C | 13°C / 3°C | 9days (100 mm) Wet | 7h Good | 77% Humid | 3.1 Moderate | Fair | View Details |
| February | 17°C / 6°C | 15°C / 4°C | 7days (66 mm) Good | 8.5h Good | 67% Muggy | 4.1 Moderate | Fair | View Details |
| March | 19°C / 8°C | 17°C / 5°C | 11days (84 mm) Wet | 9.4h Good | 67% Muggy | 5.5 High | Good | View Details |
| April | 24°C / 10°C | 23°C / 8°C | 4days (28 mm) Good | 11h Excellent | 56% Moderate | 6.9 High | Excellent | View Details |
| May best | 29°C / 13°C | 28°C / 12°C | 3days (16 mm) Excellent | 12.7h Excellent | 45% Moderate | 7.9 Very High | Excellent | View Details |
| June | 35°C / 17°C | 34°C / 16°C | 0days (1 mm) Excellent | 13.6h Excellent | 36% Comfortable | 8.2 Very High | Excellent | View Details |
| July | 38°C / 19°C | 38°C / 18°C | 0days (0 mm) Excellent | 13.5h Excellent | 35% Comfortable | 8.3 Very High | Good | View Details |
| August | 37°C / 19°C | 37°C / 18°C | 0days (1 mm) Excellent | 12.5h Excellent | 39% Comfortable | 7.7 Very High | Good | View Details |
| September best | 34°C / 17°C | 33°C / 16°C | 1days (4 mm) Excellent | 11.4h Excellent | 43% Moderate | 6.5 High | Excellent | View Details |
| October best | 28°C / 13°C | 26°C / 12°C | 2days (20 mm) Excellent | 9.8h Good | 47% Moderate | 5.1 High | Excellent | View Details |
| November | 20°C / 9°C | 18°C / 7°C | 5days (40 mm) Good | 8.2h Good | 62% Muggy | 3.5 Moderate | Good | View Details |
| December | 15°C / 6°C | 13°C / 4°C | 9days (78 mm) Wet | 6.9h Fair | 74% Muggy | 2.8 Moderate | Fair | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Patterson are May, September, October, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Patterson, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Patterson is July, with average daytime highs of 38°C (100°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Patterson is January, with average overnight lows of 6°C (42°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Patterson is January, averaging 100mm of precipitation across 9 rainy days. An umbrella or waterproof jacket is essential.
Patterson receives approximately 125 sunshine hours per year. The sunniest month is June with around 14 hours. Based on climate data for Patterson.
The least favorable months to visit Patterson are January, February, December, primarily due to less favorable weather conditions. For the best conditions, consider May, September, October instead.
The annual average UV index in Patterson is 6, classified as high. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Patterson is 54%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Patterson rarely sees significant snowfall but does experience frost, averaging 1 frost days during the colder months.
Average wind speeds in Patterson are 13 km/h (8 mph). The windiest month is May with peak winds reaching 15 km/h (10 mph) (gusts up to 37 km/h / 23 mph).
Patterson averages 15 clear-sky days per month with overall cloud cover around 33%. The clearest skies occur in July.
The annual average dew point in Patterson is 9°C (48°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Patterson has a Hot-Summer Mediterranean climate, classified as Csa under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Patterson ranges from 10°C (50°F) to 25°C (77°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
Yes, June is a great time to visit Patterson. It earns a climate score of 8.5/10 with Excellent.
For June in Patterson, pack Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses, Sandals. With average highs of 35°C (95°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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