Modesto, United States experiences average highs of 25°C (77°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.
Modesto, United States Weather & Climate 2026
Monthly climate averages for Modesto, 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: April, May, June, September, October
UV Index
6
High
Temperature 25°C / 12°C
Feels Like 24°C / 10°C
Rainy Days 4
Rainfall 42 mm
Sunshine 10 h
Humidity 55%
Wind Speed 15 km/h
Dew Point 9°C
Frost Days 1 days
Hottest Month
37°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
17 km/h
June (Gusts 37)
Worst Time to Visit
Consider avoiding January, February, December due to less favorable weather conditions.
Sun Position
Sunrise 05:43
Daylight 14.8h
Sunset 20:28
Live conditions—
Modesto on the map · live conditions
Modesto, United States
- Continent
- Americas
- Country
- United States
- City
- Modesto
- Population
- 211.3K
- Elevation
- 28 m
- Coordinates
- 37.64°, -121.00°
Seasonal Breakdown
Spring
Mar–May
Avg High 24°C
Avg Low 11°C
Rain 6 days/mo
2/3 best months
Summer
Jun–Aug
Avg High 36°C
Avg Low 18°C
Rain 0 days/mo
1/3 best months
Autumn
Sep–Nov
Avg High 26°C
Avg Low 13°C
Rain 3 days/mo
2/3 best months
Winter
Dec–Feb
Avg High 15°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 / 14°C . Jun: 35°C / 17°C . Jul: 37°C / 19°C . Aug: 36°C / 19°C . Sep: 33°C / 17°C . Oct: 27°C / 13°C . Nov: 19°C / 9°C . Dec: 15°C / 6°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 108 mm. Feb: 75 mm. Mar: 91 mm. Apr: 31 mm. May: 17 mm. Jun: 1 mm. Jul: 0 mm. Aug: 1 mm. Sep: 4 mm. Oct: 26 mm. Nov: 51 mm. Dec: 96 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 78%. Feb: 69%. Mar: 68%. Apr: 57%. May: 45%. Jun: 37%. Jul: 36%. Aug: 40%. Sep: 44%. Oct: 49%. Nov: 65%. Dec: 76%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 15 km/h . Feb: 16 km/h . Mar: 15 km/h . Apr: 15 km/h . May: 17 km/h . Jun: 17 km/h . Jul: 16 km/h . Aug: 16 km/h . Sep: 14 km/h . Oct: 13 km/h . Nov: 12 km/h . Dec: 13 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 5. Apr: UV 7. May: UV 8. Jun: UV 8. Jul: UV 8. Aug: UV 8. Sep: UV 6. 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 17 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Aug 2025 · 37°C | Jul · 37°C |
| Coldest month | Jan 2025 · 4°C | Jan · 6°C |
| Wettest month | Nov 2025 · 106 mm | Jan · 108 mm |
| Windiest month | Jun 2025 · 18 km/h | Jun · 17 km/h |
Month-by-Month Weather Table
January
Fair 
February
Fair March
Good April best
Excellent May best
Excellent June best
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 (108 mm) Wet | 6.9h Fair | 78% Humid | 3 Moderate | Fair | View Details |
| February | 17°C / 6°C | 15°C / 3°C | 7days (75 mm) Good | 8.5h Good | 69% Muggy | 4.1 Moderate | Fair | View Details |
| March | 19°C / 8°C | 17°C / 6°C | 11days (91 mm) Wet | 9.4h Good | 68% Muggy | 5.4 High | Good | View Details |
| April best | 24°C / 10°C | 23°C / 8°C | 4days (31 mm) Good | 11h Excellent | 57% Moderate | 6.8 High | Excellent | View Details |
| May best | 29°C / 14°C | 28°C / 12°C | 3days (17 mm) Excellent | 12.7h Excellent | 45% Moderate | 7.8 Very High | Excellent | View Details |
| June best | 35°C / 17°C | 34°C / 16°C | 0days (1 mm) Excellent | 13.6h Excellent | 37% Comfortable | 8.1 Very High | Excellent | View Details |
| July | 37°C / 19°C | 36°C / 18°C | 0days (0 mm) Excellent | 13.5h Excellent | 36% Comfortable | 8.2 Very High | Good | View Details |
| August | 36°C / 19°C | 36°C / 18°C | 0days (1 mm) Excellent | 12.5h Excellent | 40% Comfortable | 7.6 Very High | Good | View Details |
| September best | 33°C / 17°C | 32°C / 16°C | 1days (4 mm) Excellent | 11.4h Excellent | 44% Moderate | 6.4 High | Excellent | View Details |
| October best | 27°C / 13°C | 25°C / 12°C | 3days (26 mm) Excellent | 9.8h Good | 49% Moderate | 5 Moderate | Excellent | View Details |
| November | 19°C / 9°C | 18°C / 7°C | 5days (51 mm) Good | 8.1h Good | 65% Muggy | 3.5 Moderate | Good | View Details |
| December | 15°C / 6°C | 13°C / 3°C | 9days (96 mm) Wet | 6.8h Fair | 76% Humid | 2.7 Moderate | Fair | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Modesto are April, May, June, September, October, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Modesto, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Modesto is July, with average daytime highs of 37°C (99°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Modesto 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 Modesto is January, averaging 108mm of precipitation across 9 rainy days. An umbrella or waterproof jacket is essential.
Modesto receives approximately 124 sunshine hours per year. The sunniest month is June with around 14 hours. Based on climate data for Modesto.
The least favorable months to visit Modesto are January, February, December, primarily due to less favorable weather conditions. For the best conditions, consider April, May, June, September, October instead.
The annual average UV index in Modesto is 6, classified as high. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Modesto is 55%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Modesto rarely sees significant snowfall but does experience frost, averaging 1 frost days during the colder months.
Average wind speeds in Modesto are 15 km/h (9 mph). The windiest month is June with peak winds reaching 17 km/h (10 mph) (gusts up to 37 km/h / 23 mph).
Modesto averages 14 clear-sky days per month with overall cloud cover around 34%. The clearest skies occur in July.
The annual average dew point in Modesto is 9°C (48°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Modesto 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 Modesto ranges from 10°C (50°F) to 24°C (75°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 Modesto. It earns a climate score of 9.1/10 with Excellent.
For June in Modesto, 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.
Last updated: