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Rhône: 20.6 °C at Genève, Halle de l'Île river temperature · FOEN gauge 2.7 km away · 27.09. 00h
Temperature · last 4 and next 28 hours
Updated hourly.
Two-week trend.
Sunrise –, golden light until –
Sunset –, golden light from –
–
European index, measured continuously.
Daily maximum — protection advised from 3.
Snow settles about 300 m below it.
Neighbouring municipalities, as the crow flies.
Today (Sunday 27 Sep) in Le Grand-Saconnex: partly cloudy, 11 to 28 °C, precipitation 0.0 mm (0 %), wind up to 9 km/h. Tomorrow: overcast, 14 to 27 °C.
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Today | partly cloudy | 11 °C | 28 °C | 0.0 mm | 9 km/h |
| Tomorrow | overcast | 14 °C | 27 °C | 0.0 mm | 7 km/h |
| Tue 29 Sep | overcast | 15 °C | 25 °C | 0.1 mm | 9 km/h |
| Wed 30 Sep | light rain | 17 °C | 19 °C | 2.7 mm | 6 km/h |
| Thu 1 Oct | rain | 16 °C | 19 °C | 20.0 mm | 6 km/h |
| Fri 2 Oct | overcast | 17 °C | 22 °C | 0.0 mm | 13 km/h |
| Sat 3 Oct | overcast | 17 °C | 22 °C | 0.9 mm | 7 km/h |
No rain expected in Le Grand-Saconnex today or tomorrow. The 15-minute detail for the next two hours is shown on demand.
Sunday 27 Sep in Le Grand-Saconnex, hour by hour: sunny in the morning, sunny in the afternoon, partly cloudy in the evening. Low 12 °C around 08:00, high 28 °C around 16:00. No rainy hour.
| Time | Weather | Temp. | Precip. | Wind |
|---|---|---|---|---|
| 00:00 | sunny | 16 °C | 0.0 mm | 2 km/h |
| 01:00 | sunny | 15 °C | 0.0 mm | 2 km/h |
| 02:00 | sunny | 14 °C | 0.0 mm | 2 km/h |
| 03:00 | sunny | 14 °C | 0.0 mm | 2 km/h |
| 04:00 | sunny | 13 °C | 0.0 mm | 2 km/h |
| 05:00 | sunny | 13 °C | 0.0 mm | 2 km/h |
| 06:00 | sunny | 12 °C | 0.0 mm | 2 km/h |
| 07:00 | sunny | 12 °C | 0.0 mm | 2 km/h |
| 08:00 | sunny | 12 °C | 0.0 mm | 2 km/h |
| 09:00 | sunny | 13 °C | 0.0 mm | 1 km/h |
| 10:00 | sunny | 16 °C | 0.0 mm | 1 km/h |
| 11:00 | sunny | 20 °C | 0.0 mm | 0 km/h |
| 12:00 | sunny | 22 °C | 0.0 mm | 2 km/h |
| 13:00 | sunny | 25 °C | 0.0 mm | 6 km/h |
| 14:00 | sunny | 27 °C | 0.0 mm | 9 km/h |
| 15:00 | sunny | 28 °C | 0.0 mm | 10 km/h |
| 16:00 | sunny | 28 °C | 0.0 mm | 10 km/h |
| 17:00 | partly cloudy | 28 °C | 0.0 mm | 9 km/h |
| 18:00 | partly cloudy | 28 °C | 0.0 mm | 9 km/h |
| 19:00 | partly cloudy | 26 °C | 0.0 mm | 6 km/h |
| 20:00 | partly cloudy | 24 °C | 0.0 mm | 3 km/h |
| 21:00 | partly cloudy | 22 °C | 0.0 mm | 2 km/h |
| 22:00 | overcast | 20 °C | 0.0 mm | 3 km/h |
| 23:00 | partly cloudy | 20 °C | 0.0 mm | 2 km/h |
Tomorrow, Monday 28 Sep, in Le Grand-Saconnex: overcast, 14 to 27 °C, wind up to 7 km/h. No precipitation expected.
This weekend in Le Grand-Saconnex: Saturday overcast, 17 to 22 °C; Sunday partly cloudy, 11 to 28 °C.
Yes: 2 days with precipitation are expected in Le Grand-Saconnex over the next 7 days, 23.7 mm in total. Wettest day: Thursday 1 Oct (20.0 mm).
The best day of the next 7 in Le Grand-Saconnex: Sunday 27 Sep, partly cloudy, up to 28 °C.
From 20 Sep to 26 Sep: 18.3 °C on average, 2.6 °C above the September normal (15.7 °C), 0 mm of precipitation (7-day normal: 20 mm). Warmest day: saturday 26 Sep (27 °C); coolest night: saturday 26 Sep (10 °C).
| Day | Min | Max | Rain |
|---|---|---|---|
| Sun 20 Sep | 12 °C | 27 °C | 0.0 mm |
| Mon 21 Sep | 12 °C | 25 °C | 0.0 mm |
| Tue 22 Sep | 14 °C | 24 °C | 0.0 mm |
| Wed 23 Sep | 10 °C | 26 °C | 0.0 mm |
| Thu 24 Sep | 11 °C | 25 °C | 0.0 mm |
| Fri 25 Sep | 10 °C | 24 °C | 0.0 mm |
| Sat 26 Sep | 10 °C | 27 °C | 0.0 mm |
Open-Meteo analyses of the last 7 days (models and assimilated observations), MeteoSwiss 1991–2020 normals. Updated nightly.
In Le Grand-Saconnex (435 m), the mean annual temperature is 11.0 °C. The warmest month is July (20.6 °C on average) and the coldest January (2.1 °C). About 932 mm of precipitation falls per year, peaking in October (94 mm) with a minimum in February (56 mm). The sun shines for about 1932 hours a year, mostly in July (271 h). On average there are 69 frost days and 18 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 33.3 °C and the absolute minimum −7.0 °C.
Mean monthly precipitation (mm) — bar height relative to the wettest month.
| Month | Mean T | Abs. max | Abs. min | Precip. (mm) | Sunshine (h) | Frost days | Summer days |
|---|---|---|---|---|---|---|---|
| Jan | 2.1 °C | 12.2 °C | −7.0 °C | 73 | 64 | 19 | 0 |
| Feb | 2.9 °C | 14.5 °C | −6.3 °C | 56 | 101 | 17 | 0 |
| Mar | 6.8 °C | 19.6 °C | −3.6 °C | 62 | 167 | 8 | 0 |
| Apr | 10.5 °C | 23.6 °C | −0.6 °C | 66 | 192 | 1 | 1 |
| May | 14.6 °C | 27.9 °C | 3.4 °C | 77 | 216 | 0 | 4 |
| Jun | 18.5 °C | 31.6 °C | 7.3 °C | 82 | 247 | 0 | 14 |
| Jul | 20.6 °C | 33.3 °C | 9.6 °C | 78 | 271 | 0 | 21 |
| Aug | 20.0 °C | 32.8 °C | 8.9 °C | 80 | 246 | 0 | 18 |
| Sep | 15.7 °C | 27.7 °C | 5.3 °C | 87 | 190 | 0 | 6 |
| Oct | 11.3 °C | 22.2 °C | 1.2 °C | 94 | 121 | 1 | 0 |
| Nov | 6.1 °C | 16.8 °C | −3.3 °C | 88 | 68 | 7 | 0 |
| Dec | 2.9 °C | 12.5 °C | −6.0 °C | 89 | 49 | 15 | 0 |
| Year | 11.0 °C | 33.3 °C | −7.0 °C | 932 | 1932 | 69 | 64 |
Source: MeteoSwiss open data (1991–2020 normals) — stations Genève / Cointrin (2 km, 411 m), Nyon / Changins (21 km, 458 m), La Dôle (22 km, 1670 m), adjusted to the elevation of Le Grand-Saconnex (435 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.