The best times to visit San Joaquin Valley for ideal weather are

March 5th to June 17th


September 10th to November 11th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other San Joaquin Valley Travel Info

Weather in San Joaquin Valley


Average temperatures in San Joaquin Valley vary drastically. Considering humidity, temperatures feel very nice much of the year, but hot in the summer and cold in the winter with a very low chance of rain or snow throughout the year. The area is somewhat temperate — in the 48th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit San Joaquin Valley, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally early July where highs are regularly around 100.7°F (38.2°C) with temperatures rarely dropping below 64.6°F (18.1°C) at night.

San Joaquin Valley Temperatures (Fahrenheit)


San Joaquin Valley Temperatures (Celsius)


“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

San Joaquin Valley Perceived Temperature (F)


San Joaquin Valley Perceived Temperature (C)



Average San Joaquin Valley Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 58.2 44.9 35
Feb 64 49.8 38.2
Mar 72.7 56.9 42.8
Apr 78.4 62 46.6
May 86.3 69.7 53.1
Jun 94.3 77.6 59.1
Jul 99.4 82.5 64.3
Aug 98.4 80.9 62.2
Sep 94 75.6 57.8
Oct 81.8 64.1 49.4
Nov 67.9 51.9 39.5
Dec 57.4 44.8 34.9

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 14.6 7.2 1.7
Feb 17.8 9.9 3.4
Mar 22.6 13.8 6
Apr 25.8 16.7 8.1
May 30.2 20.9 11.7
Jun 34.6 25.3 15.1
Jul 37.4 28.1 17.9
Aug 36.9 27.2 16.8
Sep 34.4 24.2 14.3
Oct 27.7 17.8 9.7
Nov 19.9 11.1 4.2
Dec 14.1 7.1 1.6



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in San Joaquin Valley are August, July, and then September. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around late May. For example, on the week of May 21st there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid December with an average of 1 days of significant precipitation the week of December 17th.

When can you find snow in San Joaquin Valley? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in San Joaquin Valley.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in San Joaquin Valley (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 9% 0 0.8
Feb 14% 0 1
Mar 7% 0 0.8
Apr 7% 0 0.6
May 2% 0 0.2
Jun 1% 0 0.1
Jul 0% 0 0
Aug 0% 0 0
Sep 0% 0 0
Oct 4% 0 0.4
Nov 7% 0 0.7
Dec 13% 0 1.6

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 9 0 2
Feb 14 0 2.5
Mar 7 0 2
Apr 7 0 1.5
May 2 0 0.5
Jun 1 0 0.3
Jul 0 0 0
Aug 0 0 0
Sep 0 0 0
Oct 4 0 1
Nov 7 0 1.8
Dec 13 0 4.1


Humidity and Wind

San Joaquin Valley has some very humid months, and dry months in the opposite season. The least humid month is June (26.5% relative humidity), and the most humid month is December (72.9%).

Wind in San Joaquin Valley is usually calm. The windiest month is June, followed by May and July. June’s average wind speed of around 6.6 knots (7.6 MPH or 12.2 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early June where average top sustained speeds reach 13.6 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in San Joaquin Valley.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 2.4 Barely noticeable 7.3 Gentle breeze
Feb 3.1 Barely noticeable 8.6 Gentle breeze
Mar 4.4 Light breeze 10.3 Gentle breeze
Apr 5.7 Light breeze 11.8 Significant breeze
May 6.5 Light breeze 12.8 Gentle breeze
Jun 6.6 Light breeze 12.5 Significant breeze
Jul 5.8 Light breeze 10.9 Gentle breeze
Aug 5.3 Light breeze 10.6 Gentle breeze
Sep 4.4 Light breeze 9.7 Gentle breeze
Oct 3.4 Barely noticeable 8.7 Gentle breeze
Nov 2.5 Barely noticeable 7.4 Gentle breeze
Dec 2.7 Barely noticeable 7.9 Gentle breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 71.6%
Feb 66.6%
Mar 50%
Apr 39%
May 29.5%
Jun 26.5%
Jul 28.1%
Aug 28.4%
Sep 33%
Oct 46.7%
Nov 65%
Dec 72.9%


Is it Safe to Travel to San Joaquin Valley?

Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Sep 23, 2019.


The Busiest and Least Crowded Months

The busiest month for tourism in San Joaquin Valley, CA, US is June, followed by July and August. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit San Joaquin Valley in November. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is slightly extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 44.3 in November means 44.3% of the tourists vs. June.



Overall San Joaquin Valley Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderate. Highs range from 89.6°F (32°C) and 65.8°F (18.8°C) with warmer temperatures in the later months. Rain is rare with 1 to 2 days of significant precipitation per month. Spring is fairly slow for tourism, which makes it a good time for those looking for deals.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see the least precipitation with about 0 days of precipitation per month. June – August is the busiest season for tourism in San Joaquin Valley, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 96.9°F (36.1°C) and 61.9°F (16.6°C), which will feel very nice given the humidity and wind. It rains or snows a normal amount: 0 to 2 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is too cold this time of year in San Joaquin Valley to be enjoyable for warm weather travelers. The average high during this season is between 66.3°F (19.1°C) and 55.2°F (12.9°C). On average, it rains or snows a smalll amount: 3 to 4 times per month. These times of year are the second busiest with tourists.


Best Times to Travelthe United States › San Joaquin Valley, CA, US