May weather forecast
Rochester, CA

Share

Weather in May

May, the last month of the spring in Rochester, is a warm month, with an average temperature ranging between max 76.6°F (24.8°C) and min 53.6°F (12°C).

Temperature

May's average high-temperature stands at a warm 76.6°F (24.8°C), showing little deviation from April's 72.9°F (22.7°C). During May nights, Rochester documents a marked contrast from daily highs, with an average temperature of 53.6°F (12°C).

Humidity

The months with the highest humidity are February, March and May, with an average relative humidity of 53%.

Rainfall

In Rochester, during May, the rain falls for 3.2 days and regularly aggregates up to 0.2" (5mm) of precipitation. In Rochester, during the entire year, the rain falls for 42.3 days and collects up to 4.53" (115mm) of precipitation.

Snowfall

January, March through December are months without snowfall in Rochester.

Daylight

In May, the average length of the day is 13h and 57min.
On the first day of the month, sunrise is at 5:59 am and sunset at 7:34 pm. On the last day of May, in Rochester, sunrise is at 5:39 am and sunset at 7:56 pm PDT.

Sunshine

The average sunshine in May in Rochester is 11.8h.

UV index

The average daily maximum UV index in May is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: During May, 6 as the daily maximum UV index converts into the following advice:
Deflect overexposure. Sun protection is a necessity. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures in Rochester?

The high-temperature, in May, in Rochester, is 76.6°F (24.8°C), while the low-temperature averages to 53.6°F (12°C).

What is the most humid month in Rochester?

February, March and May, with an average relative humidity of 53%, are most humid months.

What is the average humidity in May in Rochester?

The average relative humidity in May in Rochester is 53%.

How many days does it rain in May in Rochester?

In May, in Rochester, California, the rain falls for 3.2 days. Throughout May, 0.2" (5mm) of precipitation is accumulated.

When it does not snow in Rochester?

In Rochester, California, snow does not fall in January, March through December.

What is the average length of the day in May in Rochester?

The average day length in May in Rochester, California, is 13h and 57min.

When are sunrise and sunset in May in Rochester?

In May, on the first day of the month, sunrise is at 5:59 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 5:39 am and sunset at 7:56 pm PDT.

How many hours of sunshine does Rochester have in May?

The average sunshine duration in May in Rochester is 11.8h.

What is the UV index reading in May in Rochester?

The average daily maximum UV index in May in Rochester, California, is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Rochester, CA

Average temperature in May - Rochester, CA
  • Average high temperature in May: 76.6°F

The warmest month (with the highest average high temperature) is August (91.8°F).
The month with the lowest average high temperature is December (61.7°F).

  • Average low temperature in May: 53.6°F

The month with the highest average low temperature is August (66.6°F).
The coldest months (with the lowest average low temperature) are February and December (45.3°F).

Average pressure in May
Rochester, CA

Average pressure in May - Rochester, CA
  • Average pressure in May: 29.9"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

Average wind speed in May
Rochester, CA

Average wind speed in May - Rochester, CA
  • Average wind speed in May: 5.9mph

The windiest month (with the highest average wind speed) is May (5.9mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).

Average humidity in May
Rochester, CA

Average humidity in May - Rochester, CA
  • Average humidity in May: 53%

The months with the highest relative humidity are February, March and May (53%).
The month with the lowest relative humidity is August (41%).

Average rainfall in May
Rochester, CA

Average rainfall in May - Rochester, CA
  • Average rainfall in May: 0.2"

The wettest month (with the highest rainfall) is February (0.98").
The driest month (with the least rainfall) is June (0.04").

Average rainfall days in May
Rochester, CA

Average rainfall days in May - Rochester, CA
  • Average rainfall days in May: 3.2 days

The month with the highest number of rainy days is March (6.3 days).
The month with the least rainy days is June (0.9 days).

Average snowfall days in May
Rochester, CA

Average snowfall days in May - Rochester, CA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

Average daylight in May /
Average sunshine in May
Rochester, CA

Average daylight in May / Average sunshine in May - Rochester, CA
  • Average daylight in May: 14h and 0min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in May: 11h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 54min).

Average sunshine days in May
Rochester, CA

Average sunshine days in May - Rochester, CA
  • Average sunshine days in May: 26.2 days

The month with the most sunshine days is June (28.3 days).
The month with the least sunshine days is February (22.8 days).

Average UV index in May
Rochester, CA

Average UV index in May - Rochester, CA
  • Average UV index in May: 6

The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in May
Rochester, CA

Average cloud cover in May - Rochester, CA
  • Average cloud cover in May: 12

The months with the most cloud cover are February and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).

Average visibility in May
Rochester, CA

Average visibility in May - Rochester, CA
  • Average visibility in May: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Rochester, California, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location