Weather in Portland

14-day forecast · updated today, Thursday, October 29, at 1:40 am (CDT)

Now · overcast 74 °F

Feels like: 80 °F
Low / high: 71 / 82 °F
Rain: 8%
Wind: 5 mph SE

→ 30.07 inHg · steady

Today in Portland: overcast, 71 °F to 82 °F, with a 8% chance of rain and a light breeze from the southeast (5 mph). Tomorrow, drizzle, 71 °F to 82 °F and a 26% chance of rain. The warmest day of the week is Monday 2, at 84 °F.

Temperatures for the next 14 days

82° 71°
Today
82° 71°
Fri 30
83° 71°
Sat 31
83° 72°
Sun 1
84° 73°
Mon 2
82° 68°
Tue 3
78° 62°
Wed 4
77° 60°
Thu 5
76° 60°
Fri 6
78° 62°
Sat 7
77° 57°
Sun 8
69° 53°
Mon 9
69° 52°
Tue 10
71° 52°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	Model
Today · 29	Overcast	71 / 82 °F	8%	13 mph ESE	2.8 ft	HRRR + NBM
Fri 30	Drizzle	71 / 82 °F	26% · 0.20 in	11 mph ESE	2.8 ft	NBM
Sat 31	Light drizzle	71 / 83 °F	11%	7 mph ESE	1.9 ft	NBM
Sun 1	Light drizzle	72 / 83 °F	2%	9 mph E	1.7 ft	NBM
Mon 2	Light drizzle	73 / 84 °F	3%	15 mph SE	3.0 ft	NBM
Tue 3	Thunderstorm	68 / 82 °F	32% · 0.27 in	15 mph SSW	3.1 ft	NBM
Wed 4	Light rain	62 / 78 °F	19% · 0.04 in	12 mph NW	2.2 ft	NBM
Thu 5	Clear sky	60 / 77 °F	4%	12 mph NNW	2.3 ft	NBM
Fri 6	Clear sky	60 / 76 °F	3%	11 mph NE	2.0 ft	NBM
Sat 7	Mainly clear	62 / 78 °F	11% · 0.19 in	12 mph SE	1.0 ft	NBM
Sun 8	Overcast	57 / 77 °F	16% · 0.10 in	14 mph SE	0.8 ft	NBM + ECMWF
Mon 9	Overcast	53 / 69 °F	21%	7 mph NE	0.7 ft	ECMWF
Tue 10	Clear sky	52 / 69 °F	14%	7 mph NNE	0.7 ft	ECMWF
Wed 11	Clear sky	52 / 71 °F	22%	10 mph NNW	0.9 ft	ECMWF

Each hour comes from the best model for this spot: HRRR until Thursday 29 8:00 pm; then NBM until Sunday 8 7:00 pm; then ECMWF until Thursday 12 9:00 am; then GFS.

Each day comes from the best model covering this spot: regional ones first (HRRR and NBM in the U.S., AROME, ICON-EU), then ECMWF; day 16, NOAA GFS. Waves: Météo-France up to day 10, then ECMWF WAM, coarser and further offshore.

Today, every 3 hours

Time	12:00 am	3:00 am	6:00 am	9:00 am	12:00 pm	3:00 pm	6:00 pm	9:00 pm
Sky	Overcast	Overcast	Overcast	Overcast	Overcast	Overcast	Overcast	Overcast
Temperature	75°	73°	71°	75°	81°	82°	79°	74°
Chance of rain	8%	5%	6%	3%	6%	4%	2%	1%
Rain	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in
Wind (mph)	5 SE	4 ESE	3 E	4 E	10 ESE	12 SE	10 E	12 E
Humidity	91%	91%	90%	86%	67%	61%	65%	78%
UV	0	0	0	1	5	4	0	0
Model	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR	NBM

Do the models agree?

Medium confidence

They broadly agree, but not quite on rain today: take it with some caution.

What 6 forecast models say for the next few days. The closer they are, the more reliable the forecast.

HighRainWind

Do the models agree? · High
High (°F)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	81°	82°	82°	82°	83°	83°	72°
AIFS	82°	78°	83°	84°	84°	84°	78°
GFS	82°	81°	86°	84°	85°	83°	83°
ICON	79°	82°	84°	84°	83°	84°	84°
HRRR	82°	80°	—	—	—	—	—
NBM	82°	82°	83°	83°	84°	82°	78°
Confidence	high	high	high	high	high	high	medium

Do the models agree? · Rain
Rain	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	0	0.07 in	0.07 in	0.06 in	0.09 in	1.61 in	0.06 in
AIFS	0.04 in	0.30 in	0.08 in	0.05 in	0.02 in	0.21 in	0.00 in
GFS	0	0.22 in	0.01 in	0	0	0.21 in	0
ICON	0.26 in	0.02 in	0	0	0	0.10 in	0.09 in
HRRR	0	0.03 in	—	—	—	—	—
NBM	0.04 in	0.20 in	0	0	0	0.27 in	0.04 in
Confidence	medium	medium	medium	medium	high	high	medium

Do the models agree? · Wind
Wind (mph)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	1324	1119	918	1024	1430	1834	1528
AIFS	12	9	6	7	12	12	13
GFS	1520	1419	1018	1014	1624	1824	1224
ICON	1016	1322	813	915	1120	1322	916
HRRR	1320	1117	—	—	—	—	—
NBM	1419	1116	711	914	1520	1520	1218
Confidence	high	high	high	high	high	high	high

Chance of rain from the ensemble models

Model	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF (51 scenarios)	33%	51%	69%	60%	29%	61%	33%
GFS (GEFS, 31 scenarios)	75%	85%	60%	3%	3%	48%	16%
NBM (NOAA)	8%	26%	11%	2%	3%	32%	19%
Thunderstorm (NBM)	1%	19%	16%	11%	12%	30%	12%

Each model's day runs midnight to midnight local time; models that reach fewer days are left blank. Rain: daily total. Wind: the day's highest average wind and, in small type, the strongest gust. Highlighted: values that stand out from the rest. The chance of rain comes from many runs of the same model with slightly different starting data.

Outlook

How the coming weeks and months compare with what is normal for the time of year. It is a trend, not a day-by-day forecast.

Next few weeks, compared with normal: normal temperatures and wetter.

Next 6 weeks

When	TemperatureTemp.	Rain	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	A bit above +2.2 °F	Above +75%	—
Nov 9 – Nov 15Nov 9–Nov 15	A bit below −1.6 °F	A bit above +36%	—
Nov 16 – Nov 22Nov 16–Nov 22	A bit above +0.9 °F	Above +51%	74° / 65°
Nov 23 – Nov 29Nov 23–Nov 29	A bit below −1.3 °F	Above +61%	69° / 60°
Nov 30 – Dec 6Nov 30–Dec 6	A bit below −2.2 °F	A bit above +43%	67° / 58°

Coming months

When	TemperatureTemp.	Rain
November	Normal +0.7 °F	A bit above +32%
December	Normal −0.5 °F	A bit above +30%
January	Normal −0.5 °F	A bit above +26%
February	A bit below −1.4 °F	Normal
March	Normal −0.5 °F	Normal

Weeks: ECMWF 46-day (average of its scenarios), against the normal of the last 20 years for those dates. Months: ECMWF SEAS5. Rain: total against normal. The further ahead, the closer it gets to normal and the less detail it can give. The long-range sea temperature isn't usable at this spot (the model's grid cell falls on land).

Portland climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Portland is from February to May and from October to November: highs of 71 °F to 86 °F, about 6 rainy days a month and 6 hours of sunshine a day.

Hurricane season: from July to September. In the last 30 years (1996–2025), 15 tropical cyclones passed within 93 mi of Portland, about 5 every 10 years; 6 of them with hurricane-force winds (74 mph or more). The most recent: Beryl, in July 2024.

67° 47°

JanJ
71° 51°

FebF
76° 58°

MarM
82° 64°

AprA
86° 71°

MayM
91° 76°

JunJ
93° 77°

JulJ
94° 77°

AugA
91° 74°

SepS
85° 66°

OctO
76° 57°

NovN
69° 50°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves	Cyclones
JanuaryJan	67°	47°	1.89 in	5	4.4	65°	3.5 ft	–
FebruaryFeb	71°	51°	1.61 in	4	4.2	64°	3.4 ft	–
MarchMar	76°	58°	1.66 in	5	5.2	66°	3.5 ft	–
AprilApr	82°	64°	1.73 in	5	6.4	71°	3.5 ft	–
MayMay	86°	71°	3.21 in	8	7.7	77°	3.5 ft	–
JuneJun	91°	76°	4.04 in	8	8.7	82°	3.2 ft	1
JulyJul	93°	77°	2.78 in	7	9.0	83°	2.8 ft	4
AugustAug	94°	77°	3.11 in	7	8.2	84°	2.6 ft	5
SeptemberSep	91°	74°	6.31 in	11	7.0	84°	2.8 ft	5
OctoberOct	85°	66°	4.00 in	7	6.4	80°	3.2 ft	–
NovemberNov	76°	57°	1.83 in	4	4.9	73°	3.5 ft	–
DecemberDec	69°	50°	2.04 in	5	4.0	69°	3.5 ft	–

Month	Water	Waves	Cyclones
Jan	65°	3.5 ft	–
Feb	64°	3.4 ft	–
Mar	66°	3.5 ft	–
Apr	71°	3.5 ft	–
May	77°	3.5 ft	–
Jun	82°	3.2 ft	1
Jul	83°	2.8 ft	4
Aug	84°	2.6 ft	5
Sep	84°	2.8 ft	5
Oct	80°	3.2 ft	–
Nov	73°	3.5 ft	–
Dec	69°	3.5 ft	–

Days: rainy days in the month. Sun: hours a day.

A normal year brings 34.21 in of rain on about 74 days and about 2,300 hours of sunshine.

Cyclones: how many tropical cyclones (tropical storms, hurricanes and typhoons) passed within 93 mi in each month from 1996 to 2025, according to IBTrACS (NOAA).

1991–2020 averages. Highs, lows and rainfall: TerraClimate; rainy days (0.04 in or more): NASA POWER (MERRA-2); sunshine hours: estimated from solar radiation; water: NOAA OISST; waves (average height): ERA5, 2011–2020. Normals are not a forecast: any given year can turn out very different. Sources and licenses

Temperature

Now74 °Ffeels like 80 °F

Tomorrow71 / 82 °F

It's 74 °F now (feels like 80 °F). Today, 71 °F to 82 °F; tomorrow, 71 °F to 82 °F.

Chance of rain

Today 8%
Fri 30 26% 0.20 in
Sat 31 11%
Sun 1 2%
Mon 2 3%
Tue 3 32% 0.27 in
Wed 4 19% 0.04 in

Today the chance of rain reaches 8%. The next day with likely rain is Friday 30: 26% and 0.20 in.

Recent rain: last 24 hours, 0.00 in; last 3 days, 4.07 in; last 7 days, 4.10 in.

Humidity and dew point

Humidity92%

Dew point71 °F

Humidity is 92% now and the dew point is 71 °F. With a dew point this high, it feels muggy. The temperature is very close to the dew point: fog may form.

The dew point is the temperature at which the air becomes saturated: the higher it is, the heavier the air feels.

Visibility and fog

Now8.1 migood

Clouds93%

Visibility is good now (8.1 mi). No fog expected today.

UV index

Now0

Today's peak6moderate

Fri 30: 6 · Sat 31: 6 · Sun 1: 6

Index	Level	What to do
0–2	low	No special protection needed.
3–5	moderate	Hat, sunglasses and sunscreen around midday.
6–7	high	Sunscreen, hat and shade between 12 and 4 pm.
8–10	very high	Avoid the midday sun; reflection off the water adds to it.
11+	extreme	Avoid the sun between 11 am and 5 pm; protect yourself even if it is cloudy.

Reflection off water and sand adds radiation: protect yourself more on a boat or at the beach.

Barometric pressure

↗ Rising Anglers say fish bite less for a while
→ Steady · now Anglers expect normal activity
↘ Falling Anglers say fish feed more before the change

29.9030.0030.1030.20 29.93

Steady now (−0.01 inHg in 3 hours). Over the next 48 hours: −0.07 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityGood · 42

Saharan dustNo

Previous days

The weather over the last 30 days, as the models analyzed it. Tap a day to see it hour by hour.

Day	Sky	Low / high	Rain	Max wind
Wed 28	Light drizzle	72 / 82 °F	0.07 in	13 mph E
Tue 27	Heavy showers	70 / 80 °F	4.05 in	9 mph E
Mon 26	Light drizzle	68 / 81 °F	0.03 in	15 mph ENE
Sun 25	Light drizzle	72 / 82 °F	0.01 in	14 mph E
Sat 24	Light drizzle	71 / 85 °F	0.01 in	15 mph ESE
Fri 23	Clear sky	67 / 83 °F	0	12 mph E
Thu 22	Overcast	72 / 81 °F	0	12 mph ENE

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Light drizzle	66 / 81 °F	0.04 in	13 mph NE
Tue 20	Overcast	64 / 82 °F	0	9 mph NE
Mon 19	Overcast	63 / 80 °F	0	11 mph NE
Sun 18	Overcast	56 / 75 °F	0	9 mph NNE
Sat 17	Overcast	57 / 71 °F	0	18 mph N
Fri 16	Light drizzle	65 / 77 °F	0.01 in	21 mph N
Thu 15	Light drizzle	78 / 88 °F	0.00 in	11 mph SE
Wed 14	Light drizzle	81 / 90 °F	0.04 in	16 mph SSE
Tue 13	Light drizzle	82 / 90 °F	0.02 in	16 mph SSE
Mon 12	Drizzle	78 / 89 °F	0.13 in	12 mph SSE
Sun 11	Mainly clear	76 / 87 °F	0	13 mph SE
Sat 10	Light drizzle	73 / 88 °F	0.01 in	11 mph ESE
Fri 9	Clear sky	71 / 89 °F	0	9 mph NE
Thu 8	Light drizzle	74 / 89 °F	0.02 in	10 mph NE
Wed 7	Overcast	75 / 88 °F	0	11 mph NE
Tue 6	Light drizzle	75 / 88 °F	0.02 in	12 mph NNE
Mon 5	Light drizzle	75 / 86 °F	0.06 in	14 mph NNE
Sun 4	Showers	76 / 83 °F	0.74 in	15 mph NNE
Sat 3	Thunderstorm	76 / 88 °F	0.44 in	12 mph NNE
Fri 2	Showers	78 / 87 °F	0.63 in	8 mph NE
Thu 1	Thunderstorm	82 / 92 °F	0.37 in	15 mph SSE
Wed 30	Drizzle	82 / 90 °F	0.09 in	15 mph SSE
Tue 29	Light drizzle	80 / 90 °F	0.07 in	14 mph SE

These are the models at the start of each day (ECMWF and GFS; waves from Météo-France), not readings from a weather station: there can be differences at specific spots.

Questions about the weather in PortlandQuestions

What's the weather like today in Portland?

Overcast, from 71 °F to 82 °F, with a light breeze from the southeast (5 mph) and a 8% chance of rain.

Will it rain tomorrow in Portland?

On Friday 30 the chance of rain is 26% (0.20 in): drizzle.

How warm will it be this week?

Between a low of 62 °F and a high of 84 °F; the warmest day, Monday 2.

What's the UV index today?

It reaches 6 (moderate). Hat, sunglasses and sunscreen around midday.

Is the pressure rising or falling?

It's 30.07 inHg and steady: −0.01 inHg over the last 24 hours.

When is the best time to visit Portland?

The best time to visit Portland is from February to May and from October to November: highs of 71 °F to 86 °F, about 6 rainy days a month and 6 hours of sunshine a day.

What is the weather like in Portland in October?

In October, Portland normally sees highs of 85 °F and lows of 66 °F, with about 7 rainy days (4.00 in for the month) and 6 hours of sunshine a day. The sea is around 80 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Portland?

The warmest is August, with average highs of 94 °F, and the coldest January, with lows of 47 °F. The wettest is September (6.31 in) and the driest, February.

When is hurricane season in Portland?

Hurricane season: from July to September. In the last 30 years (1996–2025), 15 tropical cyclones passed within 93 mi of Portland, about 5 every 10 years; 6 of them with hurricane-force winds (74 mph or more). The most recent: Beryl, in July 2024.

More about Portland today

Weather near Portland

Only places with a different forecast: spots a few miles apart share the same model cell and wouldn't add anything.

Learn more

Weather: Open-Meteo, CC BY 4.0, with the best model for each spot and lead time (NOAA HRRR and NBM in the U.S., Météo-France AROME, DWD ICON-EU, ECMWF IFS and NOAA GFS); ECMWF grid point 9.6 mi away. The comparison also uses ICON (DWD), AIFS (ECMWF) and ARPEGE (Météo-France). Outlook: ECMWF 46-day and SEAS5. Chance of rain from ensemble models (ECMWF, GEFS and NBM). UV, air quality and pollen: CAMS (Copernicus).

Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 1:40 am (local time).

Spotted a mistake? Tell us · Where the weather and sea data come from