Weather in Grimstad

14-day forecast · updated today, Thursday, October 29, at 3:19 am (CET)

Now · mainly clear 47 °F

Feels like: 42 °F
Low / high: 47 / 56 °F
Rain: 22%
Wind: 7 mph WSW

↗ 30.10 inHg · rising

Today in Grimstad: overcast, 47 °F to 56 °F, with a 22% chance of rain and a light breeze from the west-southwest (7 mph). Tomorrow, fog, 44 °F to 59 °F and a 0% chance of rain. The warmest day of the week is Friday 30, at 59 °F. No significant rain expected over the next 7 days.

Temperatures for the next 14 days

56° 47°
Today
59° 44°
Fri 30
51° 41°
Sat 31
52° 46°
Sun 1
50° 38°
Mon 2
53° 35°
Tue 3
52° 38°
Wed 4
51° 37°
Thu 5
48° 34°
Fri 6
46° 31°
Sat 7
48° 37°
Sun 8
45° 34°
Mon 9
45° 38°
Tue 10
41° 38°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	Model
Today · 29	Overcast	47 / 56 °F	22%	12 mph WSW	4.3 ft	ICON-EU
Fri 30	Fog	44 / 59 °F	0%	4 mph WNW	2.2 ft	ICON-EU
Sat 31	Fog	41 / 51 °F	2%	5 mph NNW	1.6 ft	ICON-EU
Sun 1	Light rain	46 / 52 °F	6% · 0.02 in	6 mph NW	2.0 ft	ICON-EU
Mon 2	Overcast	38 / 50 °F	4%	15 mph NNE	2.2 ft	ICON-EU + ECMWF
Tue 3	Partly cloudy	35 / 53 °F	0%	8 mph NW	0.5 ft	ECMWF
Wed 4	Overcast	38 / 52 °F	1%	7 mph NNW	0.6 ft	ECMWF
Thu 5	Partly cloudy	37 / 51 °F	2%	7 mph NW	0.6 ft	ECMWF
Fri 6	Mainly clear	34 / 48 °F	2%	7 mph NNW	0.7 ft	ECMWF
Sat 7	Partly cloudy	31 / 46 °F	8%	6 mph NW	1.2 ft	ECMWF
Sun 8	Overcast	37 / 48 °F	15%	8 mph NNW	1.4 ft	ECMWF
Mon 9	Overcast	34 / 45 °F	20%	8 mph N	1.4 ft	ECMWF
Tue 10	Drizzle	38 / 45 °F	26% · 0.44 in	14 mph NE	4.5 ft	ECMWF
Wed 11	Drizzle	38 / 41 °F	25% · 0.08 in	14 mph NNE	4.5 ft	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.

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	Mainly clear	Clear	Partly cloudy	Clear sky	Overcast	Mainly clear	Clear	Mainly clear
Temperature	49°	47°	47°	50°	55°	55°	51°	49°
Chance of rain	22%	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)	6 WSW	7 WSW	7 WSW	10 W	12 WSW	9 WSW	7 SW	6 WSW
Humidity	92%	87%	86%	83%	78%	76%	88%	85%
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 wind 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°	53°	54°	53°	53°	52°
AIFS	56°	55°	50°	52°	50°	49°	50°
GFS	55°	54°	51°	57°	50°	49°	49°
ICON	56°	59°	53°	52°	50°	51°	53°
ARPEGE	55°	56°	51°	54°	—	—	—
ICON-EU	56°	59°	51°	52°	50°	—	—
Confidence	high	high	high	high	high	high	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	0.01 in	0	0	0
ARPEGE	0	0	0	0	—	—	—
ICON-EU	0	0	0	0.02 in	0	—	—
Confidence	high	high	high	high	high	high	high

Do the models agree? · Wind
Wind (mph)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	1123	713	59	1130	628	823	714
AIFS	10	7	4	9	9	5	6
GFS	1129	76	65	1528	67	43	43
ICON	1123	512	48	48	1123	49	514
ARPEGE	1421	1117	67	1422	—	—	—
ICON-EU	1221	47	58	610	1526	—	—
Confidence	high	high	high	medium	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)	22%	0%	2%	6%	4%	0%	1%
GFS (GEFS, 31 scenarios)	0%	0%	0%	3%	3%	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 −90%	—
Nov 9 – Nov 15Nov 9–Nov 15	Normal −0.5 °F	Normal	—
Nov 16 – Nov 22Nov 16–Nov 22	Normal −0.2 °F	A bit above +23%	41° / 37°
Nov 23 – Nov 29Nov 23–Nov 29	Normal −0.4 °F	A bit above +22%	40° / 36°
Nov 30 – Dec 6Nov 30–Dec 6	Normal −0.7 °F	Normal	38° / 35°

Coming months

When	TemperatureTemp.	Rain
November	Normal +0.4 °F	Normal
December	Above +2.7 °F	A bit above +24%
January	Normal +0.5 °F	Normal
February	Normal −0.2 °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).

Grimstad climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Grimstad is in July: highs of 69 °F, about 9 rainy days a month and 7 hours of sunshine a day.

36° 28°

JanJ
37° 26°

FebF
43° 31°

MarM
50° 36°

AprA
59° 44°

MayM
65° 51°

JunJ
69° 55°

JulJ
68° 54°

AugA
61° 49°

SepS
52° 42°

OctO
44° 35°

NovN
38° 29°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves
JanuaryJan	36°	28°	4.04 in	13	1.9	41°	5.4 ft
FebruaryFeb	37°	26°	2.76 in	10	2.5	38°	5.1 ft
MarchMar	43°	31°	2.50 in	9	5.2	39°	4.2 ft
AprilApr	50°	36°	2.01 in	9	6.5	43°	3.1 ft
MayMay	59°	44°	2.53 in	9	8.1	51°	2.9 ft
JuneJun	65°	51°	3.01 in	9	8.1	58°	2.9 ft
JulyJul	69°	55°	3.19 in	9	7.4	63°	2.9 ft
AugustAug	68°	54°	4.17 in	11	6.6	64°	3.1 ft
SeptemberSep	61°	49°	4.83 in	12	4.6	60°	3.9 ft
OctoberOct	52°	42°	5.74 in	14	3.1	54°	4.7 ft
NovemberNov	44°	35°	5.49 in	14	1.4	48°	5.0 ft
DecemberDec	38°	29°	4.25 in	13	1.2	44°	5.7 ft

Month	Water	Waves
Jan	41°	5.4 ft
Feb	38°	5.1 ft
Mar	39°	4.2 ft
Apr	43°	3.1 ft
May	51°	2.9 ft
Jun	58°	2.9 ft
Jul	63°	2.9 ft
Aug	64°	3.1 ft
Sep	60°	3.9 ft
Oct	54°	4.7 ft
Nov	48°	5.0 ft
Dec	44°	5.7 ft

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

A normal year brings 44.52 in of rain on about 130 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

Now47 °Ffeels like 42 °F

Tomorrow44 / 59 °F

It's 47 °F now (feels like 42 °F). Today, 47 °F to 56 °F; tomorrow, 44 °F to 59 °F.

Chance of rain

Today 22%
Fri 30 0%
Sat 31 2%
Sun 1 6% 0.02 in
Mon 2 4%
Tue 3 0%
Wed 4 1%

Today the chance of rain reaches 22%. No significant rain expected this week.

Recent rain: last 24 hours, 0.06 in; last 3 days, 0.91 in; last 7 days, 5.14 in.

Humidity and dew point

Humidity87%

Dew point44 °F

Humidity is 87% now and the dew point is 44 °F.

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

Visibility and fog

Now17 migood

Clouds12%

Visibility is good now (17 mi). No fog expected today.

The model gives visibility up to about 15 mi: beyond that, the horizon is clear.

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

30.0030.2030.40 30.45

Rising now (+0.04 inHg in 3 hours). Over the next 48 hours: +0.34 inHg. Rising pressure: anglers say fish bite less for a while. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityFair · 23

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	Drizzle	48 / 55 °F	0.09 in	12 mph SW
Tue 27	Light rain	49 / 56 °F	0.84 in	21 mph SSW
Mon 26	Light drizzle	47 / 57 °F	0.01 in	15 mph WSW
Sun 25	Rain	47 / 50 °F	1.31 in	28 mph S
Sat 24	Rain	48 / 51 °F	1.80 in	15 mph ESE
Fri 23	Drizzle	43 / 53 °F	0.14 in	8 mph SSW
Thu 22	Rain	49 / 53 °F	1.31 in	15 mph SSE

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Light rain	44 / 52 °F	0.85 in	18 mph ENE
Tue 20	Drizzle	42 / 49 °F	0.07 in	16 mph NE
Mon 19	Partly cloudy	33 / 53 °F	0	6 mph NW
Sun 18	Partly cloudy	36 / 53 °F	0	8 mph N
Sat 17	Mainly clear	38 / 53 °F	0	11 mph N
Fri 16	Light rain	45 / 55 °F	0.34 in	11 mph W
Thu 15	Light drizzle	52 / 58 °F	0.07 in	17 mph SW
Wed 14	Overcast	47 / 57 °F	0	16 mph W
Tue 13	Rain	47 / 53 °F	0.90 in	17 mph SSE
Mon 12	Overcast	36 / 49 °F	0	8 mph NE
Sun 11	Light drizzle	40 / 49 °F	0.01 in	14 mph NNE
Sat 10	Heavy drizzle	40 / 48 °F	0.33 in	18 mph NNE
Fri 9	Drizzle	40 / 51 °F	0.18 in	13 mph ENE
Thu 8	Light rain	43 / 56 °F	0.40 in	14 mph N
Wed 7	Rain	42 / 53 °F	0.90 in	12 mph NNW
Tue 6	Partly cloudy	48 / 60 °F	0	13 mph W
Mon 5	Light drizzle	53 / 64 °F	0.06 in	17 mph SW
Sun 4	Overcast	47 / 59 °F	0	15 mph WSW
Sat 3	Light drizzle	51 / 60 °F	0.11 in	15 mph SW
Fri 2	Drizzle	52 / 65 °F	0.08 in	11 mph WSW
Thu 1	Light rain	56 / 62 °F	0.31 in	14 mph E
Wed 30	Light drizzle	55 / 63 °F	0.01 in	16 mph ENE
Tue 29	Light drizzle	47 / 59 °F	0.01 in	12 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 GrimstadQuestions

What's the weather like today in Grimstad?

Overcast, from 47 °F to 56 °F, with a light breeze from the west-southwest (7 mph) and a 22% chance of rain.

Will it rain tomorrow in Grimstad?

On Friday 30 the chance of rain is 0% (0.00 in): fog.

How warm will it be this week?

Between a low of 35 °F and a high of 59 °F; the warmest day, Friday 30.

What's the UV index today?

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

Is the pressure rising or falling?

It's 30.10 inHg and rising: +0.22 inHg over the last 24 hours.

When is the best time to visit Grimstad?

The best time to visit Grimstad is in July: highs of 69 °F, about 9 rainy days a month and 7 hours of sunshine a day.

What is the weather like in Grimstad in October?

In October, Grimstad normally sees highs of 52 °F and lows of 42 °F, with about 14 rainy days (5.74 in for the month) and 3 hours of sunshine a day. The sea is around 54 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Grimstad?

The warmest is July, with average highs of 69 °F, and the coldest February, with lows of 26 °F. The wettest is October (5.74 in) and the driest, April.

More about Grimstad today

Weather near Grimstad

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 12 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 3:19 am (local time).

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