Issaquah weather in March

In March, Issaquah sees average daytime highs of 52°F and overnight lows near 37°F, with 6.5 in of precipitation across 18.7 wet days and about 11.6 hours of daylight. It is the 8th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 50°F in the first days to 54°F by the end. The sky is clear or mostly clear about 14% of the time in March, and the air most often feels dry.

Daylight stretches from about 10 h 42 min at the start of March to 12 h 30 min by month's end. Set against the rest of the year, March is Issaquah's 9th-clearest and 5th-windiest month. For the whole year in context, see Issaquah's year-round climate.

Daytime high: 52°; 8th warmest
Overnight low: 37°; 4th coldest
Precipitation: 6.5 in; 18.7 wet days
Daylight: 11 h 36 min; 6:31 AM – 6:05 PM
Cloud cover: 74%; 9th clearest
Wind: 5 mph; 5th windiest
Solar energy: 2.98 kWh/m²
Travel score: 2.2; out of 10

Issaquah is city in King County, Washington, United States.

Density: 1,222/km²; people per km²
Founded: 1892

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← February Issaquah year-round climate April →Best places to visit in March

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 50°F in the first days to 54°F by the end.

A typical March day in Issaquah reaches about 52°F in the afternoon and slips back to 37°F overnight — a 15°F spread between the day's warmth and the night's chill. On most days the high lands between 44°F and 62°F. Set against its neighbours, March runs about 4°F warmer than February and about 5°F cooler than April.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°F)	49	50	50	50	50	50	51	51	51	51	51	52	52	52	52	52	53	53	53	53	53	53	53	53	54	54	54	54	54	54	54
Avg low (°F)	36	36	36	36	36	36	37	37	37	37	37	37	37	37	38	38	38	38	38	38	38	38	38	38	38	38	38	38	38	39	39

	Avg high (°F)	Avg low (°F)
1	49	36
2	50	36
3	50	36
4	50	36
5	50	36
6	50	36
7	51	37
8	51	37
9	51	37
10	51	37
11	51	37
12	52	37
13	52	37
14	52	37
15	52	38
16	52	38
17	53	38
18	53	38
19	53	38
20	53	38
21	53	38
22	53	38
23	53	38
24	53	38
25	54	38
26	54	38
27	54	38
28	54	38
29	54	38
30	54	39
31	54	39

How March really feels in Issaquah

Once humidity and wind are folded in, March averages 0 days that feel above 90°F and 7 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F

heat index over the day's high

Days feeling ≤ 32°F

wind chill below the day's low

The story in March is cold — wind chill drags the overnight "feels like" below the raw low.

Issaquah weather by month

How March compares with the rest of the year at a glance. March is the 8th-warmest and 5th-wettest month here — the current month is highlighted below.

Month	High / Low (°F)	Rainfall (inches)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	45° / 35°	8.3	18.7	3.6	8.7	0.8
Feb	48° / 36°	5.8	15.5	2.6	9.9	1.5
Mar	52° / 37°	6.5	18.7	1.8	11.6	2.2
Apr	57° / 41°	5.4	16.5	0.2	13.3	3.4
May	63° / 46°	3.8	12.8	0	14.9	5.1
Jun	67° / 50°	3.2	11.4	0	15.7	5.9
Jul	74° / 54°	1.3	6.5	0	15.4	7.7
Aug	74° / 54°	1.6	5.7	0	14.1	7.9
Sep	68° / 49°	3.4	9	0	12.4	6.6
Oct	58° / 43°	6.6	15.1	0	10.6	3.9
Nov	49° / 38°	9.0	18.7	1	9.1	1.6
Dec	44° / 35°	8.1	18.4	3.4	8.3	0.6

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 12% of March, with mostly cloudy or overcast conditions the remaining 74%. Skies tend to cloud over as the month goes on.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	30	28	28	27	27	26	26	26	25	24	25	24	24	24	24	26	25	25	25	25	26	26	26	26	26	26	25	25	25	25	25
Cloudier (%)	70	72	72	73	73	74	74	74	75	76	75	76	76	76	76	74	75	75	75	75	74	74	74	74	74	74	75	75	75	75	75

	Clearer (%)	Cloudier (%)
1	30	70
2	28	72
3	28	72
4	27	73
5	27	73
6	26	74
7	26	74
8	26	74
9	25	75
10	24	76
11	25	75
12	24	76
13	24	76
14	24	76
15	24	76
16	26	74
17	25	75
18	25	75
19	25	75
20	25	75
21	26	74
22	26	74
23	26	74
24	26	74
25	26	74
26	26	74
27	25	75
28	25	75
29	25	75
30	25	75
31	25	75

Chance of precipitation in March

Any precipitationSnow

Issaquah gets around 6.5 in of rain and snow over 18.7 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 60% and peaks near 61% on the wettest days, and about 2 days bring snow.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	58	58	58	59	59	59	60	60	61	61	61	61	61	61	61	61	61	61	61	61	60	60	60	60	59	59	59	59	59	58	58
Snow chance (%)	10	10	10	9	9	8	8	8	7	7	7	7	7	6	6	6	6	5	5	5	5	5	5	4	4	4	4	4	3	3	3

	Rain chance (%)	Snow chance (%)
1	58	10
2	58	10
3	58	10
4	59	9
5	59	9
6	59	8
7	60	8
8	60	8
9	61	7
10	61	7
11	61	7
12	61	7
13	61	7
14	61	6
15	61	6
16	61	6
17	61	6
18	61	5
19	61	5
20	61	5
21	60	5
22	60	5
23	60	5
24	60	4
25	59	4
26	59	4
27	59	4
28	59	4
29	59	3
30	58	3
31	58	3

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

Most of March feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, March lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

Wind in March

Winds average 5 mph in March.

Across March, daily wind ranges from about 5 mph on the calmest days to 6 mph at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (mph)	6	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (mph)	Feels
1	6	calm
2	5	calm
3	5	calm
4	5	calm
5	5	calm
6	5	calm
7	5	calm
8	5	calm
9	5	calm
10	5	calm
11	5	calm
12	5	calm
13	5	calm
14	5	calm
15	5	calm
16	5	calm
17	5	calm
18	5	calm
19	5	calm
20	5	calm
21	5	calm
22	5	calm
23	5	calm
24	5	calm
25	5	calm
26	5	calm
27	5	calm
28	5	calm
29	5	calm
30	5	calm
31	5	calm

Sunrise & sunset in March

DaylightNight

Daylight runs from about 10 h 42 min at the start of March to 12 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 108 minutes over March. Sunrise moves from 7:00 AM to 5:59 AM, and sunset from 5:43 PM to 6:27 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	10.7	10.8	10.8	10.9	10.9	11.0	11.1	11.1	11.2	11.2	11.3	11.3	11.4	11.5	11.5	11.6	11.6	11.7	11.8	11.8	11.9	11.9	12.0	12.0	12.1	12.2	12.2	12.3	12.3	12.4	12.5
Sunrise (AM)	7:00	6:58	6:56	6:54	6:53	6:51	6:49	6:47	6:45	6:43	6:41	6:39	6:37	6:35	6:33	6:31	6:29	6:26	6:24	6:22	6:20	6:18	6:16	6:14	6:12	6:10	6:08	6:06	6:04	6:02	5:59
Sunset (PM)	5:43	5:44	5:46	5:47	5:49	5:50	5:52	5:53	5:55	5:56	5:58	5:59	6:01	6:02	6:04	6:05	6:06	6:08	6:09	6:11	6:12	6:14	6:15	6:17	6:18	6:20	6:21	6:22	6:24	6:25	6:27

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	10.7	7:00	5:43
2	10.8	6:58	5:44
3	10.8	6:56	5:46
4	10.9	6:54	5:47
5	10.9	6:53	5:49
6	11.0	6:51	5:50
7	11.1	6:49	5:52
8	11.1	6:47	5:53
9	11.2	6:45	5:55
10	11.2	6:43	5:56
11	11.3	6:41	5:58
12	11.3	6:39	5:59
13	11.4	6:37	6:01
14	11.5	6:35	6:02
15	11.5	6:33	6:04
16	11.6	6:31	6:05
17	11.6	6:29	6:06
18	11.7	6:26	6:08
19	11.8	6:24	6:09
20	11.8	6:22	6:11
21	11.9	6:20	6:12
22	11.9	6:18	6:14
23	12.0	6:16	6:15
24	12.0	6:14	6:17
25	12.1	6:12	6:18
26	12.2	6:10	6:20
27	12.2	6:08	6:21
28	12.3	6:06	6:22
29	12.3	6:04	6:24
30	12.4	6:02	6:25
31	12.5	5:59	6:27

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 2.98 kWh/m².

For context, solar energy here swings from a low near 0.9 kWh/m² to a high of 6.18 kWh/m² in July across the year — March's 2.98 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	2.4	2.5	2.5	2.5	2.6	2.6	2.6	2.6	2.7	2.7	2.8	2.8	2.8	2.9	2.9	3.0	3.0	3.1	3.1	3.2	3.2	3.3	3.3	3.4	3.4	3.5	3.5	3.5	3.6	3.6	3.7
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	2.4	Moderate
2	2.5	Moderate
3	2.5	Moderate
4	2.5	Moderate
5	2.6	Moderate
6	2.6	Moderate
7	2.6	Moderate
8	2.6	Moderate
9	2.7	Moderate
10	2.7	Moderate
11	2.8	Moderate
12	2.8	Moderate
13	2.8	Moderate
14	2.9	Moderate
15	2.9	Moderate
16	3.0	Moderate
17	3.0	Moderate
18	3.1	Moderate
19	3.1	Moderate
20	3.2	Moderate
21	3.2	Moderate
22	3.3	Moderate
23	3.3	Moderate
24	3.4	Moderate
25	3.4	Moderate
26	3.5	Moderate
27	3.5	Moderate
28	3.5	Moderate
29	3.6	Moderate
30	3.6	Moderate
31	3.7	Moderate

Planning a trip in March

Hazard calendar for Issaquah

In seasonPeak

In March, Issaquah sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Issaquah's rainy season runs October–April, when most of the year's rain falls.

Rainy season

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is March a good time to visit Issaquah?

Our two travel scores rate March for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

2.2

Sightseeing

8th-best month of the year

0.0

Beach & pool

8th-best month of the year

March is a weaker month for outdoor sightseeing in Issaquah.

What to pack for Issaquah in March

From March's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In March, Issaquah sees daytime highs around 52°F and nights near 37°F. Pack a warm layer and rain gear. About 19 days see rain.

a warm layerrain gear

UV index in Issaquah in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Issaquah peaks around July 17 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 17 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	1	1	4	5	7	6	8	6	4	3	1	1
Level	Low	Low	Moderate	Moderate	High	High	Very high	High	Moderate	Moderate	Low	Low

	UV index (midday)	Level
Jan	1	Low
Feb	1	Low
Mar	4	Moderate
Apr	5	Moderate
May	7	High
Jun	6	High
Jul	8	Very high
Aug	6	High
Sep	4	Moderate
Oct	3	Moderate
Nov	1	Low
Dec	1	Low

Air quality in Issaquah in March

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where March falls, not just the annual average.

Air quality in Issaquah is worst in September — around 22 µg/m³ PM2.5 (moderate), about 3.4× the cleanest month (December, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	8	9	12	12	11	10	10	18	22	12	8	7
Level	Good	Good	Moderate	Good	Good	Good	Good	Moderate	Moderate	Good	Good	Good

	PM2.5 (µg/m³)	Level
Jan	8	Good
Feb	9	Good
Mar	12	Moderate
Apr	12	Good
May	11	Good
Jun	10	Good
Jul	10	Good
Aug	18	Moderate
Sep	22	Moderate
Oct	12	Good
Nov	8	Good
Dec	7	Good

Location & terrain

Where is Issaquah?

Issaquah sits at 47.5°N, 122.0°W, 108 ft above sea level, in United States. The nearest listed city is West Lake Sammamish, 4.3 mi away.

Topography around Issaquah

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Issaquah.

Within 2 miles, the terrain around Issaquah has large variations in elevation — a maximum elevation change of 1,998 ft around an average of 512 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 3,002 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 14,413 ft.

The land around Issaquah is covered by trees (78%) within 2 miles, trees (77%) within 10 miles, and trees (76%) within 50 miles.

2 miles

1,998 ft

trees 78%

10 miles

3,002 ft

trees 77%

50 miles

14,413 ft

trees 76%

treesgrasslandartificial surfacesbare terrainwater

← February Issaquah year-round climate April →Best places to visit in March

March weather nearby: West Lake Sammamish 4.3 mi · City of Sammamish 5.0 mi · Sammamish 8.1 mi · Fairwood 8.1 mi · Renton 9.3 mi · Mercer Island 9.3 mi · Maple Valley 9.3 mi · Bellevue 9.3 mi

United States travel facts

Power plugs: Type A / B; 120 V · 60 Hz
Prices: ≈ 100% of US; price level, 2025
GDP per capita: $90,027; 2025
Happiness: 6.8 / 10; World Happiness, 2025
Safe drinking water: 98%; of population, 2024
Homicide rate: 5.8; per 100k, 2023
Road deaths: 12.7; per 100k/yr, 2019
Income group: High; World Bank
Religion

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Issaquah (47.5301°, -122.0326°, elevation 108 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).

	Avg high (°F)	Avg low (°F)
1	49	36
2	50	36
3	50	36
4	50	36
5	50	36
6	50	36
7	51	37
8	51	37
9	51	37
10	51	37
11	51	37
12	52	37
13	52	37
14	52	37
15	52	38
16	52	38
17	53	38
18	53	38
19	53	38
20	53	38
21	53	38
22	53	38
23	53	38
24	53	38
25	54	38
26	54	38
27	54	38
28	54	38
29	54	38
30	54	39
31	54	39

	Clearer (%)	Cloudier (%)
1	30	70
2	28	72
3	28	72
4	27	73
5	27	73
6	26	74
7	26	74
8	26	74
9	25	75
10	24	76
11	25	75
12	24	76
13	24	76
14	24	76
15	24	76
16	26	74
17	25	75
18	25	75
19	25	75
20	25	75
21	26	74
22	26	74
23	26	74
24	26	74
25	26	74
26	26	74
27	25	75
28	25	75
29	25	75
30	25	75
31	25	75

	Rain chance (%)	Snow chance (%)
1	58	10
2	58	10
3	58	10
4	59	9
5	59	9
6	59	8
7	60	8
8	60	8
9	61	7
10	61	7
11	61	7
12	61	7
13	61	7
14	61	6
15	61	6
16	61	6
17	61	6
18	61	5
19	61	5
20	61	5
21	60	5
22	60	5
23	60	5
24	60	4
25	59	4
26	59	4
27	59	4
28	59	4
29	59	3
30	58	3
31	58	3

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

	Avg high (°F)	Avg low (°F)
1	49	36
2	50	36
3	50	36
4	50	36
5	50	36
6	50	36
7	51	37
8	51	37
9	51	37
10	51	37
11	51	37
12	52	37
13	52	37
14	52	37
15	52	38
16	52	38
17	53	38
18	53	38
19	53	38
20	53	38
21	53	38
22	53	38
23	53	38
24	53	38
25	54	38
26	54	38
27	54	38
28	54	38
29	54	38
30	54	39
31	54	39

	Clearer (%)	Cloudier (%)
1	30	70
2	28	72
3	28	72
4	27	73
5	27	73
6	26	74
7	26	74
8	26	74
9	25	75
10	24	76
11	25	75
12	24	76
13	24	76
14	24	76
15	24	76
16	26	74
17	25	75
18	25	75
19	25	75
20	25	75
21	26	74
22	26	74
23	26	74
24	26	74
25	26	74
26	26	74
27	25	75
28	25	75
29	25	75
30	25	75
31	25	75

	Rain chance (%)	Snow chance (%)
1	58	10
2	58	10
3	58	10
4	59	9
5	59	9
6	59	8
7	60	8
8	60	8
9	61	7
10	61	7
11	61	7
12	61	7
13	61	7
14	61	6
15	61	6
16	61	6
17	61	6
18	61	5
19	61	5
20	61	5
21	60	5
22	60	5
23	60	5
24	60	4
25	59	4
26	59	4
27	59	4
28	59	4
29	59	3
30	58	3
31	58	3

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

	Avg high (°F)	Avg low (°F)
1	49	36
2	50	36
3	50	36
4	50	36
5	50	36
6	50	36
7	51	37
8	51	37
9	51	37
10	51	37
11	51	37
12	52	37
13	52	37
14	52	37
15	52	38
16	52	38
17	53	38
18	53	38
19	53	38
20	53	38
21	53	38
22	53	38
23	53	38
24	53	38
25	54	38
26	54	38
27	54	38
28	54	38
29	54	38
30	54	39
31	54	39

	Clearer (%)	Cloudier (%)
1	30	70
2	28	72
3	28	72
4	27	73
5	27	73
6	26	74
7	26	74
8	26	74
9	25	75
10	24	76
11	25	75
12	24	76
13	24	76
14	24	76
15	24	76
16	26	74
17	25	75
18	25	75
19	25	75
20	25	75
21	26	74
22	26	74
23	26	74
24	26	74
25	26	74
26	26	74
27	25	75
28	25	75
29	25	75
30	25	75
31	25	75

	Rain chance (%)	Snow chance (%)
1	58	10
2	58	10
3	58	10
4	59	9
5	59	9
6	59	8
7	60	8
8	60	8
9	61	7
10	61	7
11	61	7
12	61	7
13	61	7
14	61	6
15	61	6
16	61	6
17	61	6
18	61	5
19	61	5
20	61	5
21	60	5
22	60	5
23	60	5
24	60	4
25	59	4
26	59	4
27	59	4
28	59	4
29	59	3
30	58	3
31	58	3

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100