Climate of Lewiston

Lewiston has a mediterranean climate. The summers are warm and dry, and the temperature is cold in the winter. The average annual temperature for Lewiston is 15° degrees and there is about 316 mm of rain in a year. It is dry for 197 days a year with an average humidity of 66% and an UV-index of 3.

Climate averages for the whole year

Day: the average daily temperature during the day is between 2°C and 29°C
Night:the average nighttime temperature is between -4°C and 15°C
Rain: it rains 136 days and there is a total of approximately 318 mm rainfall
Snow: it snows an average of 23 days per year
Sun hours: throughout the year there are 3159 sun hours

Maximum temperature:	between 2°C and 29°C
Warmest month:	29°C in July
Coldest month:	2°C in December
Night temperature:	between -4°C and 15°C
Dry days:	206 days
Days with rain:	136 days
Days with snow:	23 days
Total rain sum:	318 mm
Hours of sunshine:	3159 hours

Climate of Lewiston
Temperature graph
Precipitation graph
Climate chart of Lewiston
The best travel time for Lewiston
Climate of Lewiston by month
Experiences with the weather of Lewiston

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Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for Lewiston.

Precipitation graph

This graph shows the average amount of rainfall per month for Lewiston.

Climate table of Lewiston

In this climate table you can see at a glance what the average weather per month is for Lewiston. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Lewiston might be like in a given month.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Day temp. (°C)	3	5	9	13	18	22	29	29	24	16	8	2
Night temp. (°C)	-3	-2	1	3	6	9	13	15	12	6	1	-4
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Precipitation (mm)	37	35	45	33	20	22	9	7	7	25	34	44
Days with rain	14	13	17	16	13	11	4	4	6	11	14	13
Days with snow	4	7	2	-	-	-	-	-	-	-	2	8
Dry days	13	8	12	14	18	19	27	27	24	20	14	10
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sun hours per day	5	5	7	10	11	11	12	12	11	7	6	5
Wind force (Bft)	2	2	2	2	2	2	2	2	2	2	2	2
UV-index	2	1	3	3	4	5	7	5	4	3	2	2

Best time to visit Lewiston

The best time to visit Lewiston in the state of Idaho is from May through September. In this period you have a warm temperature and almost no precipitation. The highest average temperature in Lewiston is 29°C in July and the lowest is 2°C in December.

Climate of Lewiston by month

What is the average climate in a given month for Lewiston? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.

January