11-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Overcast
8°
Feels like 6°
Wind↑ E 13 km/h
Gusts31 km/h
Humidity 74 %
Evening
Drizzle
9°
Feels like 6°
Wind↑ ENE 16 km/h
Gusts33 km/h
Humidity 80 %
💧 0.6 mm
12-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Rain
7°
Feels like 4°
Wind↑ NNE 15 km/h
Gusts25 km/h
Humidity 87 %
💧 7.6 mm
Evening
Rain showers
7°
Feels like 4°
Wind↑ NNW 16 km/h
Gusts40 km/h
Humidity 81 %
💧 1.9 mm
13-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Overcast
5°
Feels like 4°
Wind↑ NNW 6 km/h
Gusts14 km/h
Humidity 88 %
Evening
Clear sky
8°
Feels like 7°
Wind↑ WNW 6 km/h
Humidity 76 %
14-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Overcast
5°
Feels like 4°
Wind↑ NW 5 km/h
Humidity 90 %
Chelles forecast in charts · next 7 days
The week ahead: highs and lows
≈ A week close to the usual temperatures
Highs Lows Usual for the season (1991–2020 average)
Hourly detail
Temperature (°C) Rain (mm) Wind (km/h)
Chelles climate: what a normal year looks like
From 16 h 11 min of daylight in late June to 8 h 14 min in late December.
There is no real dry season: monthly rainfall stays between 52 mm and 79 mm on average.
The hottest stretch is August, when afternoons average 25 °C; the coldest is January, when nights average 1 °C.
Even the coldest month, January, keeps nights above freezing on average (1 °C).
Forecast highs for the coming week average 12 °C, 4 °C cooler than a normal October (16 °C).
30-year averages (1991–2020)
Month
Typical high
Typical low
Rainfall
Jan
7 °C
1 °C
62 mm
Feb
8 °C
2 °C
56 mm
Mar
12 °C
4 °C
58 mm
Apr
15 °C
6 °C
57 mm
May
19 °C
10 °C
70 mm
Jun
22 °C
13 °C
60 mm
Jul
24 °C
15 °C
59 mm
Aug
25 °C
14 °C
62 mm
Sep
20 °C
11 °C
52 mm
Oct
16 °C
9 °C
68 mm
Nov
10 °C
5 °C
66 mm
Dec
7 °C
2 °C
79 mm
Whole year
15 °C
8 °C
750 mm
Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 48.88° N, 2.60° E, 1991–2020. 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 you breathe in Chelles: pollution and pollen
3/6
Moderate
European Air Quality Index (EAQI), from Copernicus CAMS
PM2.521µg/m³
PM1034µg/m³
O₃3µg/m³
NO₂43µg/m³
SO₂3µg/m³
Pollen
AlderNone
BirchNone
GrassNone
MugwortNone
OliveNone
RagweedNone
Copernicus CAMS model, updated several times a day.
Rain radar around Chelles
Rain observed over the last two hours by official weather radars around Chelles, followed by the radar forecast for the next hour where the weather service provides one.
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Rain radarLast two hours, then forecast where available · drag the timeline
Moon over Chelles
Waning gibbous
87 % illuminated · 18.3 days
Rise 05:09 Set 23:05
Fri30/1079%
Sat31/1069%
Sun1/1159%
Mon2/1149%Last quarter
Tue3/1138%
Wed4/1128%
Thu5/1119%
Fri6/1112%
Sat7/116%
Sun8/112%
Mon9/110%
Tue10/111%New moon
Moonrise and moonset in local time (Europe/Paris); phase and lit fraction from a synodic calculation.
Look up a past day in Chelles
Curious about the weather in Chelles on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.
Chelles weather at a glance
This page gathers everything about the weather in Chelles, Seine-et-Marne (77): conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “partly cloudy”, it is 14 °C (feels like 14 °C) and the wind blows at 12 km/h.
Expected range today: 5 °C to 14 °C and a dry sky. The forecast comes from the AtmoAtlas engine, which combines ECMWF-AIFS, NOAA GFS and DWD ICON, adjusts cloud cover with METAR reports and uses convective energy (CAPE) to flag storms.
Use the Chelles forecast in your own website or app: one JSON call returns weather, air quality, tides and sun and moon times. The free key needs no card.
