The best times to visit the United States for ideal weather are

April 23rd 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.

Show Me Travel Deals on Expedia

 


the United States Travel Guide

  • Safety
  • The busiest and least popular months
  • Overall travel experience by time of year
  • Weather in the United States

    Temperature

    Average temperatures in the United States vary somewhat and are seasonally temperate. The area is in the top 58 percent of tourist destinations for pleasant weather. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit the United States, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally early August where highs are regularly around 84.4°F (29.1°C) with temperatures rarely dropping below 64.6°F (18.1°C) at night.

    the United States Temperatures (Fahrenheit)

    Key
    High
    Average
    Low

    the United States Temperatures (Celsius)

    Key
    High
    Average
    Low

    “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.

    the United States Perceived Temperature (F)

    Key
    High
    Average
    Low

    the United States Perceived Temperature (C)

    Key
    High
    Average
    Low

     

    Average the United States 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 44.7 35 26.9
    Feb 46.7 36.8 28.5
    Mar 55.9 45.2 36.1
    Apr 64.5 53.6 44.1
    May 72.9 62.3 52.7
    Jun 80.6 70.2 60.7
    Jul 83.8 73.5 64.4
    Aug 83.2 72.7 63.5
    Sep 77.8 66.9 57.8
    Oct 67.4 56.8 47.9
    Nov 56.2 46.1 37.6
    Dec 47.5 38.6 31.1

    Show Celsius

    Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
    Jan 7.1 1.7 -2.8
    Feb 8.2 2.7 -1.9
    Mar 13.3 7.3 2.3
    Apr 18.1 12 6.7
    May 22.7 16.8 11.5
    Jun 27 21.2 15.9
    Jul 28.8 23.1 18
    Aug 28.4 22.6 17.5
    Sep 25.4 19.4 14.3
    Oct 19.7 13.8 8.8
    Nov 13.4 7.8 3.1
    Dec 8.6 3.7 -0.5

     

    Precipitation (Rain or Snow)

    If dry weather is what you’re after, the months with the lowest chance of precipitation in the United States are December, June, and then May. The lowest chance of rain or snow occurs around mid-January. For example, on the week of January 15th there are only 1 days of precipitation on average. By contrast, it’s most likely to rain or snow in late April with an average of 1.3 days with significant precipitation the week of April 23rd.

    When can you find snow in the United States? Weather stations report quite a lot of snow likely to be deepest around February, especially close to late July. Powder (new snow) is most often falls around July 23rd. 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 the United States.

    Key
    Days with precipitation

    Snow on the Ground

    The graph below shows the average snow on the ground in the United States (in).

    Key
    Snow depth

    Average Rain and Snow by Month

    Show Inches

    Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
    Jan 15.7 0.6 0.04
    Feb 17.1 0.8 0.04
    Mar 15.7 0.7 0.04
    Apr 17.1 0.4 0.05
    May 18.6 0.1 0.05
    Jun 18.6 0 0.06
    Jul 17.1 0 0.05
    Aug 17.1 0 0.05
    Sep 15.7 0 0.05
    Oct 15.7 0.1 0.05
    Nov 15.7 0.3 0.04
    Dec 18.6 0.5 0.05

    Show Centimeters

    Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
    Jan 15.7 1.5 0.1
    Feb 17.1 2 0.1
    Mar 15.7 1.8 0.1
    Apr 17.1 1 0.13
    May 18.6 0.3 0.13
    Jun 18.6 0 0.15
    Jul 17.1 0 0.13
    Aug 17.1 0 0.13
    Sep 15.7 0 0.13
    Oct 15.7 0.3 0.13
    Nov 15.7 0.8 0.1
    Dec 18.6 1.3 0.13

     

    Humidity and Wind

    the United States has slightly low to average humidity compared to most tourist destinations. The least humid month is April (53.4% relative humidity), and the most humid month is December (65.5%).

    Wind in the United States is usually moderate. The windiest month is April, followed by March and February. April’s average wind speed of around 8 knots (9.2 MPH or 14.8 KPH) is considered “gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early-to-mid-April where average top sustained speeds reach 15.9 knots, which is considered a moderate breeze.

    Relative Humidity (%)

    The graph below shows the average % humidity by month in the United States.

    Key
    Avg. Relative Humidity

    Wind

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

    Key
    Max Sustained Wind
    Average Daily Wind

    Average Wind Speeds

    Show Wind Speeds

    All wind speeds are in knots.

    Month Avg. Wind Meaning (Beaufort) Avg. Maximum Sustained Wind Meaning (Beufort)
    Jan 7.5 a gentle breeze 14.5 a moderate breeze
    Feb 7.7 a gentle breeze 14.9 a moderate breeze
    Mar 7.8 a gentle breeze 15.1 a moderate breeze
    Apr 8 a gentle breeze 15.6 a moderate breeze
    May 7.2 a gentle breeze 14.4 a moderate breeze
    Jun 6.6 a light breeze 13.8 a moderate breeze
    Jul 5.9 a light breeze 12.9 a moderate breeze
    Aug 5.7 a light breeze 12.4 a moderate breeze
    Sep 6.1 a light breeze 12.6 a moderate breeze
    Oct 6.8 a light breeze 13.5 a moderate breeze
    Nov 7.3 a gentle breeze 14 a moderate breeze
    Dec 7.3 a gentle breeze 14 a moderate breeze

    Show Relative Humidity by Month

    Month Avg. Relative Humidity
    Jan 60.2
    Feb 59.2
    Mar 55.3
    Apr 53.4
    May 56.3
    Jun 58.1
    Jul 59.5
    Aug 60.1
    Sep 60.1
    Oct 59.3
    Nov 59.5
    Dec 65.5

     

    Is it Safe to Travel to the United States?

    As of 6/22/2017 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.
     

    The Busiest and Least Crowded Months

    The busiest month for tourism in the United States is July, followed by June and May. 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 the United States 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

    Key
    Tourists Seeking Accommodations

    Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Displayed data is calculated relative to the peak, so a score of 18.2 in November means 18.2% of the tourists vs. July.

    Overall the United States Travel Experience by Season

    Spring (March through May)

    Humidity and temperatures combine to make this season feel moderately cold. Highs range from 77.5°F (25.3°C) and 48.4°F (9.1°C) with warmer temperatures in the later months. Rain is somewhat common with 5 to 6 days of precipitation per month. Spring is moderately busy 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 moderate precipitation with 5 to 6 days of precipitation per month. June – August is the busiest season for tourism in the United States, so lodging and other accommodations may cost as much as usual.

    Fall (September through November)

    Fall daily highs range from 80.6°F (27°C) and 51.4°F (10.8°C), which will feel comfortable given the humidity and wind. It rains or snows a fair amount: approximately 5 days per month. Tourism is the slowest during these months due to the weather, so hotels may be normally priced.

    Winter (December through February)

    Weather is too cold this time of year in the United States to be enjoyable for warm weather travelers. The average high during this season is between 48.6°F (9.2°C) and 43.9°F (6.6°C). On average, it rains or snows a noticeable amount: 5 to 6 times per month. These times of year are moderately busy with tourists.

     

    Find the Best Deals with Expedia