Long term forecast for Grimstad (Aust-Agder)
The meteorologist’s forecast (in Norwegian)
Thursday and Friday
Aust-Agder: Fra utpå natt til fredag lokalt vanskelige kjøreforhold på de høyereliggende fjellovergangene.
Kysten av Aust-Agder: Etter hvert sørvestlig frisk bris 10 m/s. For det meste skyet, stort sett oppholdsvær. Fra natt til fredag litt regn. Fra utpå ettermiddagen sørvestlig liten kuling 12. Oppklarning.
Saturday
Kysten av Aust-Agder: Vestlig opp i liten kuling. Stort sett opphold og noe sol.
Sunday
Østafjells og fjellet i Sør-Norge: Bris omkring nord. Spredt regn , snø i indre strøk og i fjellet. Til kvelden pent vær, først i nord. Litt lavere temperatur.
Monday to Thursday
Sør-Norge sør for Stad og Dovre: Nordlig bris, opp i kuling på kysten i vest og i fjellet. Lange perioder med pent vær. Litt lavere temperatur.
Can the forecast be trusted?
The long term forecasts shows the most predictable weather information. Each forecasted element, the weather symbol, temperature, and wind, is individually marked by a colour which indicates how certain it is.
- Rather certain
- Somewhat uncertain
- Uncertain
Tomorrow
|
|
5° |
|
|
Somewhat uncertain
|
Rather certain
|
Rather certain
|
Fair. Moderate breeze, 6 m/s from southwest. 0.3 mm precipitation per 24 hours.
Saturday
20/03/2010
|
8° |
|
|
Rather certain
|
Rather certain
|
Rather certain
|
Partly cloudy. Moderate breeze, 6 m/s from west-southwest. 0 mm precipitation per 24 hours.
Sunday
21/03/2010
|
5° |
|
|
Uncertain
|
Somewhat uncertain
|
Somewhat uncertain
|
Fair. Light breeze, 3 m/s from north-northeast. 0 mm precipitation per 24 hours.
Monday
22/03/2010
|
3° |
|
|
Somewhat uncertain
|
Somewhat uncertain
|
Rather certain
|
Cloudy. Light breeze, 3 m/s from south-southwest. 0 mm precipitation per 24 hours.
Tuesday
23/03/2010
|
|
3° |
|
|
Uncertain
|
Somewhat uncertain
|
Somewhat uncertain
|
Fair. Light breeze, 2 m/s from south-southwest. 0 mm precipitation per 24 hours.
Wednesday
24/03/2010
|
|
3° |
|
|
Uncertain
|
Somewhat uncertain
|
Somewhat uncertain
|
Cloudy. Light breeze, 3 m/s from east-northeast. 0 mm precipitation per 24 hours.
Thursday
25/03/2010
|
|
3° |
|
|
Uncertain
|
Somewhat uncertain
|
Somewhat uncertain
|
Cloudy. Light breeze, 3 m/s from west-northwest. 0 mm precipitation per 24 hours.
Friday
26/03/2010
|
|
3° |
|
|
Uncertain
|
Somewhat uncertain
|
Somewhat uncertain
|
Cloudy. Light breeze, 3 m/s from east. 1.5 mm precipitation per 24 hours.
Saturday
27/03/2010
|
|
3° |
|
|
Uncertain
|
Somewhat uncertain
|
Somewhat uncertain
|
Fair. Light breeze, 3 m/s from west-southwest. 1.1 mm precipitation per 24 hours.
The temperature and wind forecasts are valid for 12 noon, the symbol for 12 noon to 6 pm. Forecasts for the morning, evening and night are available in the detailed long term forecast.
Background, facts and advice on how to use the long term forecasts (in Norwegian).
Probability forecast
The long term forecast in the table above contains the most predictable weather information, and how certain we are that the forecast is correct.
The probability forecast in the diagram below indicates the probabilities for different possible developments of the temperature and precipitation. The long term forecast is given by black lines.
The grey fields (for temperature) and the blue fields (for precipitation) indicate the range of possible weather developments which are predominantly probable (80 percent). The width of the fields ir proportional to the degree of uncertainty of the forecast.
Within these fields, it is considered most probable (50 percent) that the development hits the dark part. Still it is somewhat probable (30 percent) that it hits the lighter part outside the dark.
Tips, advice and facts about the probability forecast (in Norwegian).
What is the probability for different weather?
The long term forecast (from the above table) is indicated with a black line.
- Temperature:
- 50 % probability
- 30 % probability
- Precipitation:
- 50 % probability
- 30 % probability
[eng:punkt/sannsyn:forklaring]
