The best times to visit Rosemead for ideal weather are
May 21st to October 21st
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Rosemead Travel Guide
Other Rosemead Travel Info
Weather in Rosemead
Average temperatures in Rosemead vary greatly. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a very low chance of rain or snow throughout the year. The area is more temperate than most — in the 61st 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 Rosemead, the hottest months are July, August, and then September. See average monthly temperatures below. The warmest time of year is generally early July where highs are regularly around 85.1°F (29.5°C) with temperatures rarely dropping below 66.5°F (19.2°C) at night.
Rosemead Temperatures (Fahrenheit)
Rosemead Temperatures (Celsius)
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.
Rosemead Perceived Temperature (F)
Rosemead Perceived Temperature (C)
Average Rosemead 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.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Rosemead are January, February, and then March. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early January. For example, on the week of January 1st there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late May with an average of 0 days of significant precipitation the week of May 21st.
When can you find snow in Rosemead? 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 Rosemead.
Snow on the Ground
The graph below shows the average snow on the ground in Rosemead (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Rosemead has some months with regular humidity, with some very dry months. The least humid month is July (18.9% relative humidity), and the most humid month is February (37.7%).
Wind in Rosemead is usually calm. The windiest month is February, followed by April and March. February’s average wind speed of around 4.7 knots (5.4 MPH or 8.8 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 mid February where average top sustained speeds reach 11.6 knots, which is considered a moderate breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Rosemead.
The graph below shows wind speed (max and average) in knots.
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||4.3||Light breeze||9.8||Gentle breeze|
|Feb||4.7||Light breeze||10.6||Gentle breeze|
|Mar||4.5||Light breeze||10.2||Gentle breeze|
|Apr||4.5||Light breeze||10.6||Gentle breeze|
|May||3.9||Barely noticeable||10.2||Gentle breeze|
|Jun||3.4||Barely noticeable||8.4||Gentle breeze|
|Jul||3.1||Barely noticeable||8.5||Gentle breeze|
|Aug||3.3||Barely noticeable||8.7||Gentle breeze|
|Sep||4||Light breeze||10.1||Gentle breeze|
|Oct||3.7||Barely noticeable||9.9||Gentle breeze|
|Nov||4.3||Light breeze||9.4||Gentle breeze|
|Dec||4.4||Light breeze||10.1||Gentle breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Rosemead?
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 Rosemead, CA, US is July, followed by August and June. 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 Rosemead in December. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall Rosemead Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel moderately cold. Highs range from 73.1°F (22.8°C) and 54.6°F (12.6°C) with warmer temperatures in the later months. Rain is nonexistent with roughly 0 days of significant precipitation per month. Spring is the slowest 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 comfortable. These months see the least precipitation with about 0 days of precipitation per month. June – August is the busiest season for tourism in Rosemead, so lodging and other accommodations may cost more than usual.
Fall (September through November)
Fall daily highs range from 84.1°F (28.9°C) and 58.9°F (14.9°C), which will feel comfortable given the humidity and wind. It rains or snows a trivial amount: approximately 0 days per month. Tourism is the second busiest during these months due to the weather, so hotels may be slightly higher priced.
Winter (December through February)
Weather is too cold this time of year in Rosemead to be enjoyable for warm weather travelers. The average high during this season is between 59.7°F (15.4°C) and 51.3°F (10.7°C). On average, it rains or snows a insignificant amount: consistently 0 times per month. These times of year are fairly slow with tourists.