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Weather in Arni (AG)

Aargau, 555 m · continuously updated

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Temperature · last 4 and next 28 hours

Arni (AG) weather: the next 24 hours

Updated hourly.

Arni (AG) weather hour by hour (48 h)

Arni (AG) 15-day forecast

Two-week trend.

Arni (AG) weekend weatherRain radar

Sun and golden hours

Sunrise –, golden light until –

Sunset –, golden light from –

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Air quality

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European index, measured continuously.

UV index

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Daily maximum — protection advised from 3.

Freezing level

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Snow settles about 300 m below it.

Around Arni (AG)

Neighbouring municipalities, as the crow flies.

7-day forecast for Arni (AG)

Today (Saturday 14 Nov) in Arni (AG): overcast, −2 to 5 °C, precipitation 0.0 mm (0 %), wind up to 10 km/h. Tomorrow: light rain, 1 to 10 °C.

Show the 7-day table
DayWeatherMinMaxPrecip.Wind
Todayovercast−2 °C5 °C0.0 mm10 km/h
Tomorrowlight rain1 °C10 °C1.7 mm7 km/h
Mon 16 Novshowers7 °C10 °C5.7 mm21 km/h
Tue 17 Novlight rain7 °C14 °C4.8 mm27 km/h
Wed 18 Novshowers10 °C12 °C5.2 mm31 km/h
Thu 19 Novlight rain9 °C14 °C4.8 mm23 km/h
Fri 20 Novlight rain0 °C9 °C4.4 mm28 km/h

Forecast updated on 14.11.2026 at 11:18 (Open-Meteo model, elevation 555 m). The interactive block at the top refreshes hourly and covers 16 days.

No rain expected today in Arni (AG). Tomorrow: rain from 06:00 to 10:00. The 15-minute detail for the next two hours is shown on demand.

Hourly weather in Arni (AG)

Saturday 14 Nov in Arni (AG), hour by hour: sunny in the morning, partly cloudy in the afternoon, sunny in the evening. Low −2 °C around 07:00, high 5 °C around 15:00. No rainy hour.

Show the 24-hour table
TimeWeatherTemp.Precip.Wind
00:00sunny0 °C0.0 mm8 km/h
01:00sunny0 °C0.0 mm9 km/h
02:00sunny0 °C0.0 mm10 km/h
03:00sunny0 °C0.0 mm10 km/h
04:00sunny−1 °C0.0 mm9 km/h
05:00sunny−1 °C0.0 mm7 km/h
06:00sunny−1 °C0.0 mm5 km/h
07:00sunny−2 °C0.0 mm4 km/h
08:00sunny−2 °C0.0 mm5 km/h
09:00sunny−1 °C0.0 mm3 km/h
10:00sunny1 °C0.0 mm4 km/h
11:00partly cloudy2 °C0.0 mm3 km/h
12:00partly cloudy4 °C0.0 mm3 km/h
13:00partly cloudy4 °C0.0 mm1 km/h
14:00partly cloudy5 °C0.0 mm2 km/h
15:00mostly sunny5 °C0.0 mm5 km/h
16:00sunny4 °C0.0 mm7 km/h
17:00sunny3 °C0.0 mm5 km/h
18:00sunny2 °C0.0 mm5 km/h
19:00sunny2 °C0.0 mm5 km/h
20:00mostly sunny1 °C0.0 mm6 km/h
21:00overcast1 °C0.0 mm5 km/h
22:00overcast1 °C0.0 mm6 km/h
23:00overcast1 °C0.0 mm5 km/h

Hourly forecast issued 14.11.2026 for Arni (AG) (555 m), Swiss local time, Open-Meteo model. The interactive block at the top of the page covers 16 days and refreshes every hour.

Weather today in Arni (AG)

Today, Saturday 14 Nov in Arni (AG): overcast, −2 to 5 °C, wind up to 10 km/h. No precipitation expected. That is 3.2 °C below the climate normal for November in Arni (AG) (4.7 °C average over 1991-2020).

Arni (AG) weather tomorrow

Tomorrow, Sunday 15 Nov, in Arni (AG): light rain, 1 to 10 °C, wind up to 7 km/h. Precipitation expected: 1.7 mm, 27 % probability.

What is the temperature in Arni (AG)?

Today in Arni (AG) (555 m): −2 to 5 °C. Tomorrow: 1 to 10 °C. Over the next 7 days, highs range from 5 to 14 °C, averaging 11 °C.

Arni (AG) weekend weather

This weekend in Arni (AG): Saturday overcast, −2 to 5 °C; Sunday light rain, 1 to 10 °C.

Will it rain in Arni (AG) this week?

Yes: 6 days with precipitation are expected in Arni (AG) over the next 7 days, 26.6 mm in total. Wettest day: Monday 16 Nov (5.7 mm).

What is the UV index in Arni (AG)?

Today in Arni (AG) (555 m), the UV index peaks at 2 (low) around midday. No particular protection is needed. In the mountains, radiation rises by about 10 % per 1,000 m, and snow reflects up to 80 % of it.

The best day to go out in Arni (AG)

The best day of the next 7 in Arni (AG): Saturday 14 Nov, overcast, up to 5 °C.

Among the 155 municipalities of canton Aargau covered by the MeteoSwiss 1991-2020 normals, Arni (AG) ranks 20 for annual precipitation (1067 mm) and 29 for sunshine (1666 hours per year). July's hottest day averages 31.8 °C; January's coldest night drops to -8.7 °C.

Climate of Arni (AG): 1991–2020 normals

In Arni (AG) (555 m), the mean annual temperature is 9.7 °C. The warmest month is July (18.9 °C on average) and the coldest January (0.8 °C). About 1067 mm of precipitation falls per year, peaking in July (125 mm) with a minimum in February (56 mm). The sun shines for about 1666 hours a year, mostly in July (232 h). On average there are 77 frost days and 10 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 31.8 °C and the absolute minimum −8.7 °C.

9.7 °CMean annual temperature
1067 mmPrecipitation per year
1666 hSunshine hours per year
77Frost days per year
49Summer days (≥ 25 °C)
JFMAMJJASOND

Mean monthly precipitation (mm) — bar height relative to the wettest month.

MonthMean TAbs. maxAbs. minPrecip. (mm)Sunshine (h)Frost daysSummer days
Jan0.8 °C11.3 °C−8.7 °C5955200
Feb1.6 °C13.3 °C−8.3 °C5684180
Mar5.6 °C18.7 °C−4.8 °C64140110
Apr9.5 °C23.2 °C−1.5 °C7817621
May13.6 °C27.3 °C2.9 °C12419204
Jun17.2 °C30.8 °C6.9 °C123211011
Jul18.9 °C31.8 °C9.3 °C125232016
Aug18.5 °C31.1 °C8.7 °C121216014
Sep14.3 °C26.4 °C4.8 °C8616104
Oct9.9 °C21.5 °C0.4 °C8210110
Nov4.7 °C15.7 °C−4.0 °C715580
Dec1.5 °C11.8 °C−8.3 °C7843180
Year9.7 °C31.8 °C−8.7 °C106716667749

At what altitude is Arni (AG) located?

Arni (AG) sits at around 555 m above sea level in the canton of Aargau. This elevation directly affects temperatures, the rain-snow line and snow cover: on average, the temperature drops by about 0.55 °C per 100 m of altitude.

What is the warmest month in Arni (AG)?

The warmest month in Arni (AG) is July, averaging 18.9 °C; the coldest is January, at 0.8 °C. The annual mean is 9.7 °C (MeteoSwiss 1991–2020 normals, reference station Zürich / Fluntern).

How much does it rain in Arni (AG) per year?

Arni (AG) receives about 1067 mm of precipitation a year, or 89 mm a month on average. The wettest month is July (125 mm) and the driest February (56 mm), according to the MeteoSwiss 1991–2020 normals.

How many frost days does Arni (AG) have?

Arni (AG) averages 77 frost days a year, most of them in January (20 days). Conversely, 49 summer days exceed 25 °C, 10 of them above 30 °C. Mean values from the MeteoSwiss 1991–2020 normals.

How many hours of sunshine does Arni (AG) get per year?

The sun shines for about 1666 hours a year in Arni (AG). The sunniest month is July (232 h) and the least sunny December (43 h), according to the MeteoSwiss 1991–2020 normals.

How big is the temperature difference between summer and winter in Arni (AG)?

In Arni (AG), the monthly mean rises from 0.8 °C in January to 18.9 °C in July: a 18.1 °C gap between the coldest and the warmest month. Absolute extremes over 1991–2020 range from −8.7 °C to 31.8 °C.

When is the best time to visit Arni (AG)?

For warmth and sunshine: July (18.9 °C on average, 232 h of sun). To avoid rain, February is the driest month (56 mm). The coldest month is January (0.8 °C).

Source: MeteoSwiss open data (1991–2020 normals) — stations Zürich / Fluntern (13 km, 604 m), Zürich / Affoltern (15 km, 444 m), Cham (15 km, 443 m), adjusted to the elevation of Arni (AG) (555 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.