Weather in Porsgrunn

14-day forecast · updated today, Thursday, October 29, at 12:33 am (CET)

Now · fog 44 °F

Feels like: 42 °F
Low / high: 39 / 56 °F
Rain: 25%
Wind: 2 mph WSW

→ 30.03 inHg · steady

Today in Porsgrunn: fog, 39 °F to 56 °F, with a 25% chance of rain and a light air from the west-southwest (2 mph). Tomorrow, fog, 40 °F to 56 °F and a 2% chance of rain. The warmest day of the week is Thursday 29, at 56 °F. Next likely rain: Sunday 1 (10%).

Temperatures for the next 14 days

56° 39°
Today
56° 40°
Fri 30
49° 37°
Sat 31
49° 46°
Sun 1
50° 38°
Mon 2
56° 39°
Tue 3
50° 39°
Wed 4
50° 36°
Thu 5
45° 34°
Fri 6
42° 33°
Sat 7
45° 33°
Sun 8
41° 36°
Mon 9
41° 36°
Tue 10
40° 38°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 29	Fog	39 / 56 °F	25%	10 mph WNW	1.3 ft	6:12 am · 6:44 pm	ICON-EU
Fri 30	Fog	40 / 56 °F	2%	4 mph NW	0.8 ft	7:05 am · 7:45 pm	ICON-EU
Sat 31	Fog	37 / 49 °F	0%	3 mph NNW	0.5 ft	8:07 am · 8:59 pm	ICON-EU
Sun 1	Light rain	46 / 49 °F	10% · 0.06 in	3 mph NNW	0.7 ft	9:19 am · 10:22 pm	ICON-EU
Mon 2	Fog	38 / 50 °F	4%	7 mph N	0.4 ft	10:34 am · 11:37 pm	ICON-EU + ECMWF
Tue 3	Mainly clear	39 / 56 °F	2%	6 mph NW	0.1 ft	11:44 am	ECMWF
Wed 4	Overcast	39 / 50 °F	0%	4 mph N	0.5 ft	12:40 am · 12:46 pm	ECMWF
Thu 5	Partly cloudy	36 / 50 °F	0%	4 mph NW	0.3 ft	1:36 am · 1:44 pm	ECMWF
Fri 6	Overcast	34 / 45 °F	0%	2 mph N	0.3 ft	2:25 am · 2:38 pm	ECMWF
Sat 7	Overcast	33 / 42 °F	4%	2 mph WNW	0.3 ft	3:10 am · 3:26 pm	ECMWF
Sun 8	Overcast	33 / 45 °F	9%	7 mph N	—	3:48 am · 4:09 pm	ECMWF
Mon 9	Overcast	36 / 41 °F	14%	3 mph WNW	—	4:23 am · 4:48 pm	ECMWF
Tue 10	Light drizzle	36 / 41 °F	18% · 0.02 in	10 mph NE	—	4:56 am · 5:26 pm	ECMWF
Wed 11	Light drizzle	38 / 40 °F	24% · 0.02 in	11 mph NNE	—	5:31 am · 6:07 pm	ECMWF

Each hour comes from the best model for this spot: ICON-EU until Monday 2 8:00 pm; then ECMWF until Thursday 12 4:00 pm; 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. High tides: our own tide calculation.

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	Partly cloudy	Fog	Fog	Fog	Overcast	Clear sky	Clear	Fog
Temperature	46°	42°	39°	41°	55°	56°	46°	41°
Chance of rain	25%	0%	0%	0%	0%	0%	0%	0%
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)	2 SSW	3 WNW	2 N	1 NNW	10 WNW	4 W	3 WSW	3 WNW
Humidity	97%	100%	100%	95%	68%	69%	93%	100%
UV	0	0	0	0	1	0	0	0
Model	ICON-EU	ICON-EU	ICON-EU	ICON-EU	ICON-EU	ICON-EU	ICON-EU	ICON-EU

Do the models agree?

Medium confidence

They broadly agree, but not quite on rain on Sunday 1: 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	58°	58°	52°	52°	51°	56°	50°
AIFS	56°	54°	46°	49°	48°	48°	46°
GFS	54°	54°	50°	54°	48°	47°	48°
ICON	57°	57°	50°	50°	50°	48°	48°
ARPEGE	50°	54°	49°	46°	—	—	—
ICON-EU	56°	56°	49°	49°	50°	—	—
Confidence	high	high	high	medium	high	medium	high

Do the models agree? · Rain
Rain	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	0	0	0	0	0	0	0
AIFS	0.01 in	0	0	0	0	0	0
GFS	0	0	0	0	0	0	0
ICON	0	0	0	0.06 in	0	0	0
ARPEGE	0	0	0	0	—	—	—
ICON-EU	0	0	0	0.06 in	0	—	—
Confidence	high	high	high	medium	high	high	high

Do the models agree? · Wind
Wind (mph)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	1128	411	27	1021	719	617	411
AIFS	7	6	2	7	8	4	3
GFS	58	44	32	719	48	43	33
ICON	918	410	36	47	715	47	410
ARPEGE	37	44	44	716	—	—	—
ICON-EU	1016	47	34	35	711	—	—
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)	25%	2%	0%	10%	4%	2%	0%
GFS (GEFS, 31 scenarios)	8%	0%	0%	13%	7%	0%	0%

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.

The next few weeks look normal for the time of year.

Next 6 weeks

When	TemperatureTemp.	Rain	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	A bit below −1.3 °F	Below −92%	—
Nov 9 – Nov 15Nov 9–Nov 15	Normal −0.5 °F	Normal	—
Nov 16 – Nov 22Nov 16–Nov 22	Normal −0.4 °F	A bit above +21%	37° / 31°
Nov 23 – Nov 29Nov 23–Nov 29	A bit below −1.1 °F	A bit above +32%	34° / 29°
Nov 30 – Dec 6Nov 30–Dec 6	A bit below −1.4 °F	Normal	32° / 27°

Coming months

When	TemperatureTemp.	Rain
November	Normal +0.4 °F	Normal
December	Above +3.6 °F	A bit above +25%
January	Normal +0.7 °F	Normal
February	A bit below −0.9 °F	Normal
March	Normal +0.7 °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).

Porsgrunn climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Porsgrunn is in July: highs of 72 °F, about 10 rainy days a month and 7 hours of sunshine a day.

34° 28°

JanJ
37° 29°

FebF
44° 32°

MarM
53° 40°

AprA
62° 49°

MayM
68° 55°

JunJ
72° 60°

JulJ
70° 58°

AugA
63° 51°

SepS
51° 42°

OctO
41° 35°

NovN
33° 29°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves
JanuaryJan	34°	28°	2.98 in	11	1.7	40°	3.2 ft
FebruaryFeb	37°	29°	2.03 in	9	2.3	38°	3.1 ft
MarchMar	44°	32°	2.07 in	8	5.6	38°	2.5 ft
AprilApr	53°	40°	1.93 in	8	6.4	43°	1.9 ft
MayMay	62°	49°	2.65 in	8	8.2	51°	1.9 ft
JuneJun	68°	55°	3.22 in	9	8.1	58°	2.0 ft
JulyJul	72°	60°	3.49 in	10	7.4	63°	1.9 ft
AugustAug	70°	58°	4.33 in	11	6.5	64°	2.2 ft
SeptemberSep	63°	51°	4.37 in	11	4.8	60°	2.6 ft
OctoberOct	51°	42°	4.84 in	13	3.1	53°	2.9 ft
NovemberNov	41°	35°	4.95 in	12	1.4	48°	3.2 ft
DecemberDec	33°	29°	3.24 in	12	1.1	43°	3.7 ft

Month	Water	Waves
Jan	40°	3.2 ft
Feb	38°	3.1 ft
Mar	38°	2.5 ft
Apr	43°	1.9 ft
May	51°	1.9 ft
Jun	58°	2.0 ft
Jul	63°	1.9 ft
Aug	64°	2.2 ft
Sep	60°	2.6 ft
Oct	53°	2.9 ft
Nov	48°	3.2 ft
Dec	43°	3.7 ft

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

A normal year brings 40.09 in of rain on about 121 days and about 1,700 hours of sunshine.

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

Now44 °Ffeels like 42 °F

Tomorrow40 / 56 °F

It's 44 °F now (feels like 42 °F). Today, 39 °F to 56 °F; tomorrow, 40 °F to 56 °F.

Chance of rain

Today 25%
Fri 30 2%
Sat 31 0%
Sun 1 10% 0.06 in
Mon 2 4%
Tue 3 2%
Wed 4 0%

Today the chance of rain reaches 25%. The next day with likely rain is Sunday 1: 10% and 0.06 in.

Recent rain: last 24 hours, 0.02 in; last 3 days, 0.86 in; last 7 days, 4.93 in.

Humidity and dew point

Humidity99%

Dew point44 °F

Humidity is 99% now and the dew point is 44 °F. 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

Now2.1 mimisty

Clouds100%

Visibility is misty now (2.1 mi). There may be fog today at 1:00 am, 2:00 am, 3:00 am, 4:00 am.

UV index

Now0

Today's peak1low

Fri 30: 1 · Sat 31: 1 · Sun 1: 1

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

29.8030.0030.2030.40 30.46

Steady now (+0.02 inHg in 3 hours). Over the next 48 hours: +0.43 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityFair · 21

PollenNoneToday, at most none.

Pollen: Copernicus CAMS model (a rough guide, not a pollen trap). Levels use each type's usual thresholds.

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	44 / 54 °F	0.04 in	11 mph SSW
Tue 27	Light rain	44 / 56 °F	0.82 in	15 mph S
Mon 26	Light drizzle	44 / 58 °F	0.02 in	10 mph SW
Sun 25	Rain	46 / 50 °F	1.96 in	18 mph SSE
Sat 24	Light rain	43 / 50 °F	0.84 in	11 mph E
Fri 23	Drizzle	42 / 51 °F	0.12 in	5 mph SE
Thu 22	Rain	47 / 53 °F	1.28 in	11 mph SE

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Light rain	42 / 50 °F	0.71 in	16 mph NE
Tue 20	Light drizzle	39 / 47 °F	0.01 in	13 mph NE
Mon 19	Mainly clear	35 / 50 °F	0	6 mph SW
Sun 18	Partly cloudy	36 / 53 °F	0	4 mph NNW
Sat 17	Mainly clear	38 / 53 °F	0	11 mph N
Fri 16	Drizzle	40 / 55 °F	0.12 in	9 mph W
Thu 15	Light drizzle	48 / 59 °F	0.08 in	14 mph SSW
Wed 14	Light drizzle	43 / 57 °F	0.01 in	11 mph W
Tue 13	Rain	41 / 51 °F	0.76 in	12 mph SE
Mon 12	Overcast	35 / 51 °F	0	6 mph NNE
Sun 11	Light drizzle	39 / 45 °F	0.06 in	13 mph NNE
Sat 10	Light rain	39 / 44 °F	0.50 in	14 mph NNE
Fri 9	Light drizzle	40 / 51 °F	0.01 in	12 mph N
Thu 8	Rain	42 / 50 °F	0.96 in	15 mph N
Wed 7	Light rain	39 / 56 °F	0.19 in	5 mph E
Tue 6	Mainly clear	46 / 60 °F	0	11 mph WSW
Mon 5	Light drizzle	54 / 66 °F	0.05 in	16 mph SW
Sun 4	Overcast	43 / 58 °F	0	11 mph WSW
Sat 3	Drizzle	48 / 59 °F	0.12 in	12 mph SW
Fri 2	Light rain	50 / 63 °F	0.37 in	6 mph SSE
Thu 1	Light drizzle	53 / 65 °F	0.04 in	10 mph ENE
Wed 30	Light drizzle	53 / 60 °F	0.02 in	11 mph NE
Tue 29	Overcast	45 / 61 °F	0	9 mph NE

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 PorsgrunnQuestions

What's the weather like today in Porsgrunn?

Fog, from 39 °F to 56 °F, with a light air from the west-southwest (2 mph) and a 25% chance of rain.

Will it rain tomorrow in Porsgrunn?

On Friday 30 the chance of rain is 2% (0.00 in): fog.

How warm will it be this week?

Between a low of 37 °F and a high of 56 °F; the warmest day, Thursday 29.

What's the UV index today?

It reaches 1 (low). No special protection needed.

Is the pressure rising or falling?

It's 30.03 inHg and steady: +0.24 inHg over the last 24 hours.

When is the best time to visit Porsgrunn?

The best time to visit Porsgrunn is in July: highs of 72 °F, about 10 rainy days a month and 7 hours of sunshine a day.

What is the weather like in Porsgrunn in October?

In October, Porsgrunn normally sees highs of 51 °F and lows of 42 °F, with about 13 rainy days (4.84 in for the month) and 3 hours of sunshine a day. The sea is around 53 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Porsgrunn?

The warmest is July, with average highs of 72 °F, and the coldest January, with lows of 28 °F. The wettest is November (4.95 in) and the driest, April.

More about Porsgrunn today

Weather near Porsgrunn

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 8.3 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 12:33 am (local time).

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