Merced, 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 11 hours per day. Average highs have stayed broadly stable across the available records.
Merced, United States Weather & Climate 2026
Monthly climate averages for Merced, 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
7.8/10
Best: April, May, September, October
UV Index
6
High
Temperature 26°C / 12°C
Feels Like 25°C / 11°C
Rainy Days 4
Rainfall 39 mm
Sunshine 11 h
Humidity 54%
Wind Speed 14 km/h
Dew Point 9°C
Frost Days 1 days
Hottest Month
39°C
July
Avg Low21°C
Rain0days
Coldest Month
5°C
January
Avg High15°C
Rain9days
Driest Month
0days
June
Avg High36°C
Avg Low19°C
Windiest Month
16 km/h
June (Gusts 35)
Worst Time to Visit
Consider avoiding January, February, December due to less favorable weather conditions.
Sun Position
Sunrise 05:42
Daylight 14.7h
Sunset 20:25
Live conditions—
Merced on the map · live conditions
Merced, United States
- Continent
- Americas
- Country
- United States
- City
- Merced
- Population
- 82.4K
- Elevation
- 52 m
- Coordinates
- 37.30°, -120.48°
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 37°C
Avg Low 20°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 5°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 / 5°C . Feb: 17°C / 6°C . Mar: 19°C / 8°C . Apr: 25°C / 11°C . May: 30°C / 14°C . Jun: 36°C / 19°C . Jul: 39°C / 21°C . Aug: 38°C / 21°C . Sep: 34°C / 18°C . Oct: 28°C / 13°C . Nov: 20°C / 8°C . Dec: 15°C / 5°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 106 mm. Feb: 67 mm. Mar: 94 mm. Apr: 26 mm. May: 15 mm. Jun: 1 mm. Jul: 0 mm. Aug: 1 mm. Sep: 6 mm. Oct: 17 mm. Nov: 43 mm. Dec: 89 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 78%. Feb: 71%. Mar: 68%. Apr: 55%. May: 44%. Jun: 34%. Jul: 32%. Aug: 36%. Sep: 40%. Oct: 46%. Nov: 63%. Dec: 76%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 13 km/h . Feb: 14 km/h . Mar: 14 km/h . Apr: 15 km/h . May: 16 km/h . Jun: 16 km/h . Jul: 16 km/h . Aug: 15 km/h . Sep: 14 km/h . Oct: 12 km/h . Nov: 11 km/h . Dec: 12 km/h .
Sunshine
Sunshine
Sunshine: Jan: 7h. Feb: 9h. Mar: 10h. Apr: 11h. May: 13h. Jun: 14h. Jul: 14h. Aug: 13h. Sep: 12h. Oct: 10h. Nov: 9h. 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 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 · 39°C | Jul · 39°C |
| Coldest month | Jan 2025 · 3°C | Jan · 5°C |
| Wettest month | Nov 2025 · 113 mm | Jan · 106 mm |
| Windiest month | Jun 2025 · 18 km/h | Jun · 16 km/h |
Month-by-Month Weather Table
January
Fair 
February
Fair March
Good April best
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 / 5°C | 13°C / 3°C | 9days (106 mm) Wet | 7.3h Good | 78% Humid | 3.1 Moderate | Fair | View Details |
| February | 17°C / 6°C | 15°C / 3°C | 7days (67 mm) Good | 8.8h Good | 71% Muggy | 4.1 Moderate | Fair | View Details |
| March | 19°C / 8°C | 18°C / 5°C | 10days (94 mm) Wet | 9.7h Good | 68% Muggy | 5.5 High | Good | View Details |
| April best | 25°C / 11°C | 23°C / 9°C | 4days (26 mm) Good | 11.4h Excellent | 55% Moderate | 6.7 High | Excellent | View Details |
| May best | 30°C / 14°C | 28°C / 13°C | 3days (15 mm) Excellent | 12.8h Excellent | 44% Moderate | 7.8 Very High | Excellent | View Details |
| June | 36°C / 19°C | 35°C / 17°C | 0days (1 mm) Excellent | 13.6h Excellent | 34% Comfortable | 8.1 Very High | Excellent | View Details |
| July | 39°C / 21°C | 38°C / 21°C | 0days (0 mm) Excellent | 13.5h Excellent | 32% Comfortable | 8.3 Very High | Good | View Details |
| August | 38°C / 21°C | 37°C / 21°C | 0days (1 mm) Excellent | 12.5h Excellent | 36% Comfortable | 7.7 Very High | Good | View Details |
| September best | 34°C / 18°C | 33°C / 18°C | 1days (6 mm) Excellent | 11.5h Excellent | 40% Comfortable | 6.6 High | Excellent | View Details |
| October best | 28°C / 13°C | 26°C / 12°C | 2days (17 mm) Excellent | 10h Excellent | 46% Moderate | 5.1 High | Excellent | View Details |
| November | 20°C / 8°C | 18°C / 6°C | 5days (43 mm) Good | 8.5h Good | 63% Muggy | 3.5 Moderate | Good | View Details |
| December | 15°C / 5°C | 13°C / 3°C | 8days (89 mm) Wet | 7.2h Good | 76% Humid | 2.8 Moderate | Fair | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Merced are April, May, September, October, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Merced, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Merced is July, with average daytime highs of 39°C (102°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Merced is January, with average overnight lows of 5°C (41°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Merced is January, averaging 106mm of precipitation across 9 rainy days. An umbrella or waterproof jacket is essential.
Merced receives approximately 127 sunshine hours per year. The sunniest month is June with around 14 hours. Based on climate data for Merced.
The least favorable months to visit Merced are January, February, December, primarily due to less favorable weather conditions. For the best conditions, consider April, May, September, October instead.
The annual average UV index in Merced is 6, classified as high. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Merced is 54%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Merced rarely sees significant snowfall but does experience frost, averaging 1 frost days during the colder months.
Average wind speeds in Merced are 14 km/h (9 mph). The windiest month is June with peak winds reaching 16 km/h (10 mph) (gusts up to 35 km/h / 22 mph).
Merced averages 15 clear-sky days per month with overall cloud cover around 32%. The clearest skies occur in July.
The annual average dew point in Merced is 9°C (48°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Merced 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 Merced ranges from 11°C (52°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 Merced. It earns a climate score of 8.5/10 with Excellent.
For June in Merced, pack Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses, Sandals. With average highs of 36°C (96°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: