When is the best time to go to San Bernardino National Forest?

When is the best time to go to San Bernardino National Forest? Here's some information to help you in your decision:

  • The best months for good weather in San Bernardino National Forest are April, May, June, July, August, September, October and November
  • On average, the warmest months are June, July, August and September
  • San Bernardino National Forest has dry periods in May, June, September, October and November
  • December is the coldest month of the year


Annual weather in San Bernardino National Forest

For full information about the climate and weather in San Bernardino National Forest a specific month, click on the corresponding line below:

Month
January 43°F/56°F
1in
February 43°F/56°F
0.9in
March 49°F/59°F
0.6in
April 52°F/67°F
0.6in
May 58°F/72°F
0.2in
June 68°F/83°F
0.1in
July 74°F/88°F
0.9in
August 74°F/88°F
0.6in
September 70°F/83°F
0.4in
October 59°F/72°F
0.2in
November 50°F/63°F
0.4in
December 43°F/54°F
0.9in


Weather and climate in San Bernardino National Forest

San Bernardino National Forest enjoys a warm-summer Mediterranean climate in accordance with the Köppen-Geiger classification. The yearly average maximum temperature in San Bernardino National Forest is 70°F (ranging from 54°F in december to 88°F in august). Annual rainfall is 6.4in, with a minimum of 0.1in in june and a maximum of 1in in january.
  • Between january and march the climate is passable, but still OK. It is for example 59°F as maximum temperature in march and it rains about 3% of the time in march.
  • In april the climate is beautiful. In average, on the morning it is 52°F.
  • Between the months of may and october the climate is perfect. The record temperature this month is 88°F and you can expect to have 0.2in of rainfall/month during this period.
  • In the month of november the climate is favorable. In average, on the morning it is 50°F and it rains about 2% of the time in november.
  • In the month of december the climate is unfavorable. In average, on the morning it is 43°F and you can expect to have 0.9in of rainfall/month during this period.


Charts: temperature and rainfall in San Bernardino National Forest

In the charts below, you can see the following seasonal norms for the city of San Bernardino National Forest: the minimum and maximum outdoor temperature, the risk and amount of monthly rainfall, daily average sunshine, and relative humidity for each month of the year.

Outside temperature

Precipitation (rainfall)

Daily sunshine hours

Humidity



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