Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
May's onset witnesses a minor shift in the average high-temperature, moving from a refreshing 67.6°F (19.8°C) in April to a warm 73.4°F (23°C). Calistoga demonstrates a significant disparity from daytime highs throughout the month of May, with an average nighttime temperature of 47.5°F (8.6°C).Humidity
In May, the average relative humidity is 64%.Rainfall
In Calistoga, in May, during 5.5 rainfall days, 0.79" (20mm) of precipitation is typically accumulated. Throughout the year, there are 77 rainfall days, and 17.05" (433mm) of precipitation is accumulated.Snowfall
In Calistoga, snow does not fall in January, March through December.Daylight
The average length of the day in May is 14h and 17min.On the first day of May, sunrise is at 6:11 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:28 pm PDT.
Sunshine
The average sunshine in May is 10.6h.UV index
In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In May, the maximum UV index of 5 suggests these recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the average humidity in May?
How many days does it rain in May?
When it does not snow?
What is the average length of the day in May?
What time are sunrise and sunset in May?
How long on average sun shines in May?
What is the UV index reading in May?
Average temperature in May
Calistoga, CA
- Average high temperature in May: 73.4°F
The warmest month (with the highest average high temperature) is August (87.8°F).
The month with the lowest average high temperature is December (54.7°F).
- Average low temperature in May: 47.5°F
The month with the highest average low temperature is July (55.4°F).
The coldest month (with the lowest average low temperature) is December (39.4°F).
Average pressure in May
Calistoga, CA
- Average pressure in May: 29.97"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).
Average wind speed in May
Calistoga, CA
- Average wind speed in May: 5.7mph
The windiest months (with the highest average wind speed) are April and May (5.7mph).
The calmest month (with the lowest average wind speed) is November (4.3mph).
Average humidity in May
Calistoga, CA
- Average humidity in May: 64%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is September (53%).
Average rainfall in May
Calistoga, CA
- Average rainfall in May: 0.79"
The wettest month (with the highest rainfall) is February (3.78").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in May
Calistoga, CA
- Average rainfall days in May: 5.5 days
The month with the highest number of rainy days is March (13.6 days).
The month with the least rainy days is August (0.8 days).
Average snowfall in May
Calistoga, CA
- Average snowfall in May: 0"
The month with the highest snowfall is February (0.04").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in May
Calistoga, CA
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are February and March (0.1 days).
The months with the least snowfall days are January, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in May /
Average sunshine in May
Calistoga, CA
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 10h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in May
Calistoga, CA
- Average sunshine days in May: 24.3 days
The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is March (15.8 days).
Average UV index in May
Calistoga, CA
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in May
Calistoga, CA
- Average cloud cover in May: 25
The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 5).
Average visibility in May
Calistoga, CA
- Average visibility in May: 6mi
The months with the highest visibility are January, February, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is March (5mi).
Calistoga, California, USA
Weather forecast for your location
2. Allow the app to use your location