Monthly Humidity Averages for Utah

The humidity averages for each month are listed below for Salt Lake City, Utah. The tables give the daily averages along with highest and lowest relative humidity levels.

Relative humidity measures the actual amount of moisture in the air as a percentage of the maximum amount of moisture the air can hold.

All the numbers here are averages for the years 1961 to 1990.

Average Humidity

In this table, the Daily number for the month or year is the average of humidity readings taken every three hours throughout the day. Morning percentages are for 8 am and Afternoon measures are for 5 pm local standard time.

Average relative humidity (%) for Salt Lake City, Utah

Daily		Morning	Afternoon
74	January	78	69
70	February	77	59
60	March	68	47
53	April	58	39
49	May	51	33
41	June	44	26
36	July	39	22
39	August	44	23
46	September	52	29
56	October	64	41
66	November	74	58
74	December	79	71
55	Annual	61	43

Highest and Lowest Humidity

Below are the monthly and yearly averages for maximum and minimum humidity levels in Utah. The hours when a month's highest and lowest humidity readings usually occur are given in local standard time.

Daily high and low relative humidity (%) averages in Salt Lake City, Utah

High	Time		Low	Time
78.4	5 am	January	63.3	2 pm
77.3	5 am	February	55.7	2 pm
70.4	5 am	March	45.8	2 pm
66.4	5 am	April	38.9	5 pm
65.0	5 am	May	33.2	5 pm
59.3	5 am	June	25.9	5 pm
52.2	5 am	July	21.7	5 pm
54.4	5 am	August	23.2	5 pm
60.8	5 am	September	28.7	2 pm
68.1	5 am	October	36.7	2 pm
74.2	5 am	November	49.7	2 pm
78.8	8 am	December	63.0	2 pm
67.1	5 am	Annual	40.8	2 pm