Trend at 11 days — beyond 10 days the forecast is only guidance (GFS model tail), not a precise value. Deviations of several degrees are possible.
Morning
Partly cloudy
1°
Feels like 1°
Wind↑ S 4 km/h
Humidity 93 %
Evening
Mainly clear
2°
Feels like 2°
Wind↑ SE 1 km/h
Humidity 92 %
Trend at 12 days — beyond 10 days the forecast is only guidance (GFS model tail), not a precise value. Deviations of several degrees are possible.
Morning
Partly cloudy
1°
Feels like 1°
Wind↑ SW 3 km/h
Humidity 91 %
Evening
Overcast
3°
Feels like 2°
Wind↑ WSW 6 km/h
Humidity 95 %
Trend at 13 days — beyond 10 days the forecast is only guidance (GFS model tail), not a precise value. Deviations of several degrees are possible.
Morning
Drizzle
5°
Feels like 3°
Wind↑ W 8 km/h
Gusts26 km/h
Humidity 98 %
💧 0.5 mm
Evening
Drizzle
5°
Feels like 4°
Wind↑ W 6 km/h
Gusts19 km/h
Humidity 94 %
💧 0.3 mm
Trend at 14 days — beyond 10 days the forecast is only guidance (GFS model tail), not a precise value. Deviations of several degrees are possible.
Morning
Overcast
4°
Feels like 4°
Wind↑ WSW 4 km/h
Humidity 91 %
Weather charts for Altena · 7 days
Temperatures over 7 days
≈ Temperatures close to seasonal normals
Highs Lows Seasonal normal (1991-2020 average)
Hourly detail
Temperature (°C) Precipitation (mm) Wind (km/h)
Climate of Altena
Daylight lasts 16 h 36 min at the June solstice and 7 h 52 min at the December solstice.
Average lows are below freezing in January and February, down to −1 °C in January.
Rain is spread through the year: every month gets between 72 mm and 111 mm on average.
August is the warmest month, with average highs of 22 °C. January is the coldest, with average lows of −1 °C.
This week’s forecast highs average 9 °C, 4 °C below the October normal (13 °C).
Monthly averages, 1991–2020
Month
Avg high
Avg low
Rain
Jan
3 °C
−1 °C
108 mm
Feb
5 °C
0 °C
90 mm
Mar
8 °C
2 °C
92 mm
Apr
13 °C
5 °C
72 mm
May
16 °C
8 °C
86 mm
Jun
20 °C
11 °C
93 mm
Jul
22 °C
14 °C
110 mm
Aug
22 °C
14 °C
104 mm
Sep
18 °C
10 °C
92 mm
Oct
13 °C
7 °C
93 mm
Nov
8 °C
3 °C
95 mm
Dec
4 °C
1 °C
111 mm
Year
12 °C
6 °C
1,150 mm
Climate normals: ERA5 reanalysis 1991–2020 (Copernicus/ECMWF), computed by SkiesAtlas for 51.29° N, 7.67° E. ERA5 averages over a 0.25° grid (about 25 km): hills, a coastline or the heat of the city itself can shift local values by a degree or two.
Air quality & pollen in Altena
1/6
Good
European Air Quality Index (EAQI) · CAMS source
PM2.58µg/m³
PM1010µg/m³
O₃40µg/m³
NO₂14µg/m³
SO₂2µg/m³
Pollen
AlderNone
BirchNone
GrassNone
MugwortNone
OliveNone
RagweedNone
CAMS data (Copernicus) · air quality and pollen refreshed several times a day.
Rain in Altena: live radar and next-hour forecast
Will it rain in Altena? Track precipitation live on the radar and anticipate showers in the next hour — the +1 h extrapolation is based on the real movement of rain cells.
Rain radarObserved, then extrapolation up to +1h (real cell movement) · drag the timeline
Moon calendar for Altena
Waning gibbous
93 % illuminated · 17.3 days
Rise 03:37 Set 21:57
Thu29/1087%
Fri30/1079%
Sat31/1069%
Sun1/1159%
Mon2/1149%Last quarter
Tue3/1138%
Wed4/1128%
Thu5/1119%
Fri6/1112%
Sat7/116%
Sun8/112%
Mon9/110%
Rise and set in local time (Europe/Berlin) · phases and illumination computed by SkiesAtlas (synodic model).
Weather history for Altena
What was the weather in Altena on a past date? Pick a day — ERA5 reanalysis data (ECMWF / Copernicus C3S), available up to one week ago.
The weather in Altena
Find the full weather for Altena, North Rhine-Westphalia: current conditions, forecast by time of day (morning, afternoon, evening) and a 7-day trend. Right now the sky is “partly cloudy” with 10 °C (feels like 10 °C) and wind at 7 km/h.
Today, temperatures range from 7 °C to 11 °C, with no significant precipitation. Forecast computed by our multi-model engine SkiesAtlas (ECMWF-AIFS, NOAA GFS, DWD ICON): cloud cover calibrated on METAR observations, convective energy (CAPE) for storms.
