Monroe weather in May

In May, Monroe sees average daytime highs of 63°F and overnight lows near 46°F, with 4.1 in of rain across 13.2 wet days and about 14.9 hours of daylight. It is the 5th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 61°F in the first days to 65°F by the end. The sky is clear or mostly clear about 19% of the time in May, and the air most often feels dry.

Daylight stretches from about 14 h 12 min at the start of May to 15 h 30 min by month's end. Set against the rest of the year, May is Monroe's 6th-clearest and 8th-windiest month. For the whole year in context, see Monroe's year-round climate.

Daytime high: 63°; 5th warmest
Overnight low: 46°; 8th coldest
Rainfall: 4.1 in; 13.2 wet days
Daylight: 14 h 54 min; 4:36 AM – 7:32 PM
Cloud cover: 68%; 6th clearest
Wind: 4 mph; 8th windiest
Solar energy: 5.25 kWh/m²
Travel score: 5.1; out of 10

Monroe is city in Snohomish County, Washington, United States.

Density: 1,144/km²; people per km²
Founded: 1903

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

← April Monroe year-round climate June →Best places to visit in May

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 61°F in the first days to 65°F by the end.

A typical May day in Monroe reaches about 63°F in the afternoon and slips back to 46°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 54°F and 74°F. Set against its neighbours, May runs about 6°F warmer than April and about 4°F cooler than June.

	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)	60	61	61	61	61	62	62	62	62	62	63	63	63	63	63	63	64	64	64	64	64	64	64	64	65	65	65	65	65	65	65
Avg low (°F)	44	44	44	44	44	44	45	45	45	45	46	46	46	46	46	47	47	47	47	47	48	48	48	48	48	48	49	49	49	49	49

	Avg high (°F)	Avg low (°F)
1	60	44
2	61	44
3	61	44
4	61	44
5	61	44
6	62	44
7	62	45
8	62	45
9	62	45
10	62	45
11	63	46
12	63	46
13	63	46
14	63	46
15	63	46
16	63	47
17	64	47
18	64	47
19	64	47
20	64	47
21	64	48
22	64	48
23	64	48
24	64	48
25	65	48
26	65	48
27	65	49
28	65	49
29	65	49
30	65	49
31	65	49

How May really feels in Monroe

Once humidity and wind are folded in, May averages 0 days that feel above 90°F and 0 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

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Monroe weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 8th-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° / 36°	9.0	19	4	8.6	0.8
Feb	48° / 36°	6.1	15.5	2.9	9.9	1.5
Mar	52° / 38°	7.1	19.1	2.3	11.6	2.2
Apr	57° / 41°	5.9	16.7	0.3	13.4	3.4
May	63° / 46°	4.1	13.2	0	14.9	5.1
Jun	67° / 51°	3.5	11.4	0	15.7	5.9
Jul	73° / 54°	1.6	6.3	0	15.4	7.6
Aug	74° / 54°	1.8	5.7	0	14.1	7.8
Sep	68° / 49°	3.7	9.2	0	12.4	6.5
Oct	58° / 43°	7.4	15.3	0	10.6	3.8
Nov	49° / 38°	9.9	19.1	0.9	9.1	1.6
Dec	44° / 35°	8.7	18.7	3.9	8.3	0.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 13% of May, with mostly cloudy or overcast conditions the remaining 68%.

	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 (%)	32	32	32	33	34	34	34	35	35	35	35	34	33	33	33	31	31	31	30	30	29	29	29	29	29	29	30	31	31	31	31
Cloudier (%)	68	68	68	67	66	66	66	65	65	65	65	66	67	67	67	69	69	69	70	70	71	71	71	71	71	71	70	69	69	69	69

	Clearer (%)	Cloudier (%)
1	32	68
2	32	68
3	32	68
4	33	67
5	34	66
6	34	66
7	34	66
8	35	65
9	35	65
10	35	65
11	35	65
12	34	66
13	33	67
14	33	67
15	33	67
16	31	69
17	31	69
18	31	69
19	30	70
20	30	70
21	29	71
22	29	71
23	29	71
24	29	71
25	29	71
26	29	71
27	30	70
28	31	69
29	31	69
30	31	69
31	31	69

Chance of precipitation in May

Any precipitation

Monroe gets around 4.1 in of rain over 13.2 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 43% and peaks near 50% on the wettest days. The odds ease toward the end of the month.

	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 (%)	50	49	48	47	47	46	45	45	44	44	44	44	43	43	43	43	43	43	42	42	42	42	41	41	40	39	39	38	38	38	38

	Rain chance (%)
1	50
2	49
3	48
4	47
5	47
6	46
7	45
8	45
9	44
10	44
11	44
12	44
13	43
14	43
15	43
16	43
17	43
18	43
19	42
20	42
21	42
22	42
23	41
24	41
25	40
26	39
27	39
28	38
29	38
30	38
31	38

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 97% 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 (%)	99	99	99	99	99	99	99	99	99	99	98	98	98	98	98	98	97	97	97	97	97	96	96	96	96	95	95	95	94	94	94
Comfortable (%)	1	1	1	1	1	1	1	1	1	1	2	2	2	2	2	2	3	3	3	3	3	4	4	4	4	5	5	5	6	6	6

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	99	1
10	99	1
11	98	2
12	98	2
13	98	2
14	98	2
15	98	2
16	98	2
17	97	3
18	97	3
19	97	3
20	97	3
21	97	3
22	96	4
23	96	4
24	96	4
25	96	4
26	95	5
27	95	5
28	95	5
29	94	6
30	94	6
31	94	6

Wind in May

Winds average 4 mph in May.

Across May, daily wind ranges from about 4 mph on the calmest days to 5 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)	5	5	5	5	5	5	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4
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	5	calm
2	5	calm
3	5	calm
4	5	calm
5	5	calm
6	5	calm
7	4	calm
8	4	calm
9	4	calm
10	4	calm
11	4	calm
12	4	calm
13	4	calm
14	4	calm
15	4	calm
16	4	calm
17	4	calm
18	4	calm
19	4	calm
20	4	calm
21	4	calm
22	4	calm
23	4	calm
24	4	calm
25	4	calm
26	4	calm
27	4	calm
28	4	calm
29	4	calm
30	4	calm
31	4	calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 h 12 min at the start of May to 15 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 78 minutes over May. Sunrise moves from 4:59 AM to 4:21 AM, and sunset from 7:12 PM to 7:50 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)	14.2	14.3	14.3	14.4	14.4	14.5	14.5	14.6	14.6	14.7	14.7	14.8	14.8	14.8	14.9	14.9	15.0	15.0	15.1	15.1	15.1	15.2	15.2	15.3	15.3	15.3	15.4	15.4	15.4	15.4	15.5
Sunrise (AM)	4:59	4:57	4:55	4:54	4:52	4:50	4:49	4:47	4:46	4:44	4:43	4:42	4:40	4:39	4:37	4:36	4:35	4:34	4:32	4:31	4:30	4:29	4:28	4:27	4:26	4:25	4:24	4:23	4:22	4:22	4:21
Sunset (PM)	7:12	7:13	7:14	7:16	7:17	7:19	7:20	7:21	7:23	7:24	7:25	7:27	7:28	7:29	7:31	7:32	7:33	7:35	7:36	7:37	7:38	7:40	7:41	7:42	7:43	7:44	7:45	7:47	7:48	7:49	7:50

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	14.2	4:59	7:12
2	14.3	4:57	7:13
3	14.3	4:55	7:14
4	14.4	4:54	7:16
5	14.4	4:52	7:17
6	14.5	4:50	7:19
7	14.5	4:49	7:20
8	14.6	4:47	7:21
9	14.6	4:46	7:23
10	14.7	4:44	7:24
11	14.7	4:43	7:25
12	14.8	4:42	7:27
13	14.8	4:40	7:28
14	14.8	4:39	7:29
15	14.9	4:37	7:31
16	14.9	4:36	7:32
17	15.0	4:35	7:33
18	15.0	4:34	7:35
19	15.1	4:32	7:36
20	15.1	4:31	7:37
21	15.1	4:30	7:38
22	15.2	4:29	7:40
23	15.2	4:28	7:41
24	15.3	4:27	7:42
25	15.3	4:26	7:43
26	15.3	4:25	7:44
27	15.4	4:24	7:45
28	15.4	4:23	7:47
29	15.4	4:22	7:48
30	15.4	4:22	7:49
31	15.5	4:21	7:50

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.25 kWh/m².

For context, solar energy here swings from a low near 0.86 kWh/m² to a high of 6.13 kWh/m² in July across the year — May's 5.25 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)	5.0	5.0	5.0	5.1	5.1	5.2	5.2	5.2	5.2	5.2	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	5.0	Bright
2	5.0	Bright
3	5.0	Bright
4	5.1	Bright
5	5.1	Bright
6	5.2	Bright
7	5.2	Bright
8	5.2	Bright
9	5.2	Bright
10	5.2	Bright
11	5.3	Bright
12	5.3	Bright
13	5.3	Bright
14	5.3	Bright
15	5.3	Bright
16	5.3	Bright
17	5.3	Bright
18	5.3	Bright
19	5.3	Bright
20	5.3	Bright
21	5.3	Bright
22	5.3	Bright
23	5.3	Bright
24	5.3	Bright
25	5.3	Bright
26	5.3	Bright
27	5.3	Bright
28	5.3	Bright
29	5.3	Bright
30	5.3	Bright
31	5.3	Bright

Planning a trip in May

Hazard calendar for Monroe

In seasonPeak

None of Monroe's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Monroe'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 May a good time to visit Monroe?

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

5.1

Sightseeing

5th-best month of the year

1.4

Beach & pool

5th-best month of the year

May is a reasonable time to visit Monroe for sightseeing.

What to pack for Monroe in May

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

In May, Monroe sees daytime highs around 63°F and nights near 46°F. Worth packing: rain gear and sun protection. About 13 days see rain.

rain gearsun protection

UV index in Monroe in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Monroe 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 18 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 Monroe in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Monroe is worst in August — around 20 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (December, 6 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	10	12	12	13	11	10	20	18	11	7	6
Level	Good	Good	Moderate	Good	Moderate	Good	Good	Moderate	Moderate	Good	Good	Good

	PM2.5 (µg/m³)	Level
Jan	8	Good
Feb	10	Good
Mar	12	Moderate
Apr	12	Good
May	13	Moderate
Jun	11	Good
Jul	10	Good
Aug	20	Moderate
Sep	18	Moderate
Oct	11	Good
Nov	7	Good
Dec	6	Good

Location & terrain

Where is Monroe?

Monroe sits at 47.9°N, 122.0°W, 72 ft above sea level, in United States. The nearest listed city is Silver Firs, 8.7 mi away.

Topography around Monroe

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

Within 2 miles, the terrain around Monroe has only modest variations in elevation — a maximum elevation change of 600 ft around an average of 138 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,808 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 10,427 ft.

The land around Monroe is covered by trees (49%) and grassland (28%) within 2 miles, trees (77%) within 10 miles, and trees (74%) within 50 miles.

2 miles

600 ft

trees 49%

10 miles

2,808 ft

trees 77%

50 miles

10,427 ft

trees 74%

treesgrasslandcroplandartificial surfacesbare terrainwater

← April Monroe year-round climate June →Best places to visit in May

May weather nearby: Silver Firs 8.7 mi · Cottage Lake 9.3 mi · North Creek 9.9 mi · Mill Creek East 9.9 mi · Eastmont 9.9 mi · Mill Creek 11 mi · West Lake Stevens 11 mi · Lake Stevens 12 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 Monroe (47.8554°, -121.971°, elevation 72 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	60	44
2	61	44
3	61	44
4	61	44
5	61	44
6	62	44
7	62	45
8	62	45
9	62	45
10	62	45
11	63	46
12	63	46
13	63	46
14	63	46
15	63	46
16	63	47
17	64	47
18	64	47
19	64	47
20	64	47
21	64	48
22	64	48
23	64	48
24	64	48
25	65	48
26	65	48
27	65	49
28	65	49
29	65	49
30	65	49
31	65	49

	Clearer (%)	Cloudier (%)
1	32	68
2	32	68
3	32	68
4	33	67
5	34	66
6	34	66
7	34	66
8	35	65
9	35	65
10	35	65
11	35	65
12	34	66
13	33	67
14	33	67
15	33	67
16	31	69
17	31	69
18	31	69
19	30	70
20	30	70
21	29	71
22	29	71
23	29	71
24	29	71
25	29	71
26	29	71
27	30	70
28	31	69
29	31	69
30	31	69
31	31	69

	Rain chance (%)
1	50
2	49
3	48
4	47
5	47
6	46
7	45
8	45
9	44
10	44
11	44
12	44
13	43
14	43
15	43
16	43
17	43
18	43
19	42
20	42
21	42
22	42
23	41
24	41
25	40
26	39
27	39
28	38
29	38
30	38
31	38

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	99	1
10	99	1
11	98	2
12	98	2
13	98	2
14	98	2
15	98	2
16	98	2
17	97	3
18	97	3
19	97	3
20	97	3
21	97	3
22	96	4
23	96	4
24	96	4
25	96	4
26	95	5
27	95	5
28	95	5
29	94	6
30	94	6
31	94	6

	Avg high (°F)	Avg low (°F)
1	60	44
2	61	44
3	61	44
4	61	44
5	61	44
6	62	44
7	62	45
8	62	45
9	62	45
10	62	45
11	63	46
12	63	46
13	63	46
14	63	46
15	63	46
16	63	47
17	64	47
18	64	47
19	64	47
20	64	47
21	64	48
22	64	48
23	64	48
24	64	48
25	65	48
26	65	48
27	65	49
28	65	49
29	65	49
30	65	49
31	65	49

	Clearer (%)	Cloudier (%)
1	32	68
2	32	68
3	32	68
4	33	67
5	34	66
6	34	66
7	34	66
8	35	65
9	35	65
10	35	65
11	35	65
12	34	66
13	33	67
14	33	67
15	33	67
16	31	69
17	31	69
18	31	69
19	30	70
20	30	70
21	29	71
22	29	71
23	29	71
24	29	71
25	29	71
26	29	71
27	30	70
28	31	69
29	31	69
30	31	69
31	31	69

	Rain chance (%)
1	50
2	49
3	48
4	47
5	47
6	46
7	45
8	45
9	44
10	44
11	44
12	44
13	43
14	43
15	43
16	43
17	43
18	43
19	42
20	42
21	42
22	42
23	41
24	41
25	40
26	39
27	39
28	38
29	38
30	38
31	38

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	99	1
10	99	1
11	98	2
12	98	2
13	98	2
14	98	2
15	98	2
16	98	2
17	97	3
18	97	3
19	97	3
20	97	3
21	97	3
22	96	4
23	96	4
24	96	4
25	96	4
26	95	5
27	95	5
28	95	5
29	94	6
30	94	6
31	94	6

	Avg high (°F)	Avg low (°F)
1	60	44
2	61	44
3	61	44
4	61	44
5	61	44
6	62	44
7	62	45
8	62	45
9	62	45
10	62	45
11	63	46
12	63	46
13	63	46
14	63	46
15	63	46
16	63	47
17	64	47
18	64	47
19	64	47
20	64	47
21	64	48
22	64	48
23	64	48
24	64	48
25	65	48
26	65	48
27	65	49
28	65	49
29	65	49
30	65	49
31	65	49

	Clearer (%)	Cloudier (%)
1	32	68
2	32	68
3	32	68
4	33	67
5	34	66
6	34	66
7	34	66
8	35	65
9	35	65
10	35	65
11	35	65
12	34	66
13	33	67
14	33	67
15	33	67
16	31	69
17	31	69
18	31	69
19	30	70
20	30	70
21	29	71
22	29	71
23	29	71
24	29	71
25	29	71
26	29	71
27	30	70
28	31	69
29	31	69
30	31	69
31	31	69

	Rain chance (%)
1	50
2	49
3	48
4	47
5	47
6	46
7	45
8	45
9	44
10	44
11	44
12	44
13	43
14	43
15	43
16	43
17	43
18	43
19	42
20	42
21	42
22	42
23	41
24	41
25	40
26	39
27	39
28	38
29	38
30	38
31	38

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	99	1
10	99	1
11	98	2
12	98	2
13	98	2
14	98	2
15	98	2
16	98	2
17	97	3
18	97	3
19	97	3
20	97	3
21	97	3
22	96	4
23	96	4
24	96	4
25	96	4
26	95	5
27	95	5
28	95	5
29	94	6
30	94	6
31	94	6