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Weather in Chaumont-Gistoux
Walloon Brabant, 80 m · continuously updated
Beauvechain (8 km) · 9 °C · KMI/IRM 14:00
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Temperature · last 4 and next 28 hours
Chaumont-Gistoux weather: the next 24 hours
Updated hourly.
Chaumont-Gistoux 15-day forecast
Two-week trend.
Sun and golden hours
Sunrise –, golden light until –
Sunset –, golden light from –
–
Air quality
European index, modelled by Copernicus (CAMS).
UV index
Daily maximum — protection advised from 3.
Freezing level
Snow settles about 300 m below it.
Around Chaumont-Gistoux
Neighbouring towns, as the crow flies.
Official weather warnings
No active warning for Walloon Brabant.
Updated 15 Nov 13:48.
Is there an active weather warning for Chaumont-Gistoux?
No active warning for Walloon Brabant.
Latest RMI observation near Chaumont-Gistoux
Measured at Beauvechain, 8 km from Chaumont-Gistoux: situation as of 15 November 2026, 14:00. Beauvechain is the nearest weather station of the RMI/KMI (Royal Meteorological Institute of Belgium), one of the country's 28 synoptic stations. These are measured values, not a forecast; this page is refreshed three times a day, hence the time shown.
| Situation as of | 15 November 2026, 14:00 |
|---|---|
| Temperature | 9.3 °C |
| Wind | 29 km/h S |
| Gusts | 47 km/h |
| Rain, last hour | — |
| Humidity | — |
| Pressure | 1003 hPa |
Observations from the 28 RMI stations
Source: RMI/KMI (Royal Meteorological Institute of Belgium), open observation data, Creative Commons Attribution 4.0 (CC BY 4.0) licence. The RMI is not liable for any damage resulting from the use of these data. Raw, unvalidated data shown as published, with wind converted from m/s to km/h. Data: opendata.meteo.be · CC BY 4.0
The observed climate near Chaumont-Gistoux
The weather station nearest to Chaumont-Gistoux, Beauvechain located 127 m above sea level, is 19 km away; its records cover 1954–2013. In November, the mean temperature there is 6.8 °C over 1991–2020, 1.1 °C more than over 1961–1990 (5.7 °C), with about – mm of rain. The warmest month ever measured is July 2006 (22.3 °C), the coldest February 1956 (−7.2 °C). See the full series of Beauvechain
Today in Chaumont-Gistoux
- No washing outside today: rain, or a risk of rain, covers the hours when it could dry. How it is calculated
- Terrace and barbecue between 18:00 and 23:00: rain likely (3.8 mm, up to 94 % chance). Have some shelter or a plan B ready. How it is calculated
- Best time to air the house: tomorrow, between 11:00 and 14:00. The outdoor dew point drops to 4 °C; once warmed to 20 °C, that air holds only 35 % humidity, against 50 % in a typical home: opening the windows dries the house. How it is calculated
- Garden: 30.1 mm of rain expected within 48 h, against a need of 1 mm. No need to water, the rain will do it. How it is calculated
Calculated from Open-Meteo forecasts of 2026-11-15 14:48 (local time): model values, not measurements. All of today's advice
7-day forecast for Chaumont-Gistoux
Today (Sunday 15 Nov) in Chaumont-Gistoux: light rain, 2 to 10 °C, precipitation 4.9 mm (94 %), wind up to 23 km/h. Tomorrow: light rain, 3 to 9 °C.
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Today | light rain | 2 °C | 10 °C | 4.9 mm | 23 km/h |
| Tomorrow | light rain | 3 °C | 9 °C | 4.6 mm | 32 km/h |
| Tue 17 Nov | rain | 4 °C | 14 °C | 24.8 mm | 28 km/h |
| Wed 18 Nov | light drizzle | 8 °C | 11 °C | 1.6 mm | 28 km/h |
| Thu 19 Nov | showers | 8 °C | 10 °C | 13.6 mm | 24 km/h |
| Fri 20 Nov | heavy drizzle | 2 °C | 9 °C | 14.2 mm | 17 km/h |
| Sat 21 Nov | partly cloudy | 0 °C | 9 °C | 0.0 mm | 13 km/h |
Tomorrow's weather in Chaumont-Gistoux
Tomorrow, Monday 16 Nov, in Chaumont-Gistoux: light rain, from 3 to 9 °C, 4.6 mm of precipitation (probability 64 %), wind up to 32 km/h.
| Hour | Weather | Temp. | Precip. | Chance | Wind |
|---|---|---|---|---|---|
| 00:00 |  heavy drizzle | 9 °C | 1.2 mm | 64 % | 13 km/h |
| 03:00 | light drizzle | 9 °C | 0.1 mm | 53 % | 20 km/h |
| 06:00 | drizzle | 8 °C | 0.6 mm | 49 % | 26 km/h |
| 09:00 |  overcast | 7 °C | 0.0 mm | 38 % | 23 km/h |
| 12:00 | overcast | 7 °C | 0.0 mm | 28 % | 20 km/h |
| 15:00 | overcast | 7 °C | 0.0 mm | 18 % | 19 km/h |
| 18:00 | overcast | 4 °C | 0.0 mm | 15 % | 10 km/h |
| 21:00 | overcast | 3 °C | 0.0 mm | 25 % | 8 km/h |
Frequently asked questions
Will it rain tomorrow in Chaumont-Gistoux?
Yes: 4.6 mm expected, probability 64 %.
How warm will it be tomorrow in Chaumont-Gistoux?
Between 3 and 9 °C.
The weekend
Today, Sunday, in Chaumont-Gistoux: light rain, 2 to 10 °C. Next weekend: Saturday partly cloudy, 0 to 9 °C, Sunday drizzle, 4 to 9 °C.
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Today |  light rain | 2 °C | 10 °C | 4.9 mm | 23 km/h |
| Sat 21 Nov |  partly cloudy | 0 °C | 9 °C | 0.0 mm | 13 km/h |
| Sun 22 Nov | drizzle | 4 °C | 9 °C | 6.0 mm | 26 km/h |
Hour by hour
The next 48 hours in Chaumont-Gistoux, hour by hour: temperature from 3 to 14 °C, 30.1 mm of rain expected.
| Hour | Weather | Temp. | Precip. | Chance | Wind |
|---|---|---|---|---|---|
| 14:00 | overcast | 8 °C | 0.0 mm | 6 % | 20 km/h |
| 15:00 | overcast | 9 °C | 0.0 mm | 18 % | 23 km/h |
| 16:00 | light drizzle | 9 °C | 0.1 mm | 33 % | 20 km/h |
| 17:00 | drizzle | 9 °C | 0.7 mm | 54 % | 17 km/h |
| 18:00 | heavy drizzle | 10 °C | 1.1 mm | 78 % | 20 km/h |
| 19:00 | light rain | 10 °C | 1.6 mm | 94 % | 15 km/h |
| 20:00 | heavy drizzle | 10 °C | 1.0 mm | 94 % | 16 km/h |
| 21:00 | light drizzle | 10 °C | 0.1 mm | 85 % | 15 km/h |
| 22:00 | overcast | 10 °C | 0.0 mm | 76 % | 14 km/h |
| 23:00 | overcast | 9 °C | 0.0 mm | 70 % | 14 km/h |
| 00:00 | heavy drizzle | 9 °C | 1.2 mm | 64 % | 13 km/h |
| 01:00 | overcast | 9 °C | 0.0 mm | 59 % | 14 km/h |
| 02:00 | light drizzle | 9 °C | 0.2 mm | 56 % | 19 km/h |
| 03:00 | light drizzle | 9 °C | 0.1 mm | 53 % | 20 km/h |
| 04:00 | light rain | 9 °C | 1.3 mm | 51 % | 25 km/h |
| 05:00 | light drizzle | 9 °C | 0.3 mm | 50 % | 32 km/h |
| 06:00 | drizzle | 8 °C | 0.6 mm | 49 % | 26 km/h |
| 07:00 | light drizzle | 8 °C | 0.4 mm | 47 % | 24 km/h |
| 08:00 | light drizzle | 8 °C | 0.1 mm | 43 % | 25 km/h |
| 09:00 | overcast | 7 °C | 0.0 mm | 38 % | 23 km/h |
| 10:00 | overcast | 7 °C | 0.0 mm | 33 % | 19 km/h |
| 11:00 | overcast | 7 °C | 0.0 mm | 30 % | 19 km/h |
| 12:00 | overcast | 7 °C | 0.0 mm | 28 % | 20 km/h |
| 13:00 | overcast | 8 °C | 0.0 mm | 25 % | 22 km/h |
| 14:00 |  sunny | 7 °C | 0.0 mm | 22 % | 20 km/h |
| 15:00 | overcast | 7 °C | 0.0 mm | 18 % | 19 km/h |
| 16:00 | overcast | 6 °C | 0.0 mm | 16 % | 16 km/h |
| 17:00 | overcast | 5 °C | 0.0 mm | 15 % | 13 km/h |
| 18:00 | overcast | 4 °C | 0.0 mm | 15 % | 10 km/h |
| 19:00 | overcast | 3 °C | 0.0 mm | 16 % | 9 km/h |
| 20:00 | overcast | 3 °C | 0.0 mm | 20 % | 8 km/h |
| 21:00 | overcast | 3 °C | 0.0 mm | 25 % | 8 km/h |
| 22:00 | overcast | 3 °C | 0.0 mm | 31 % | 7 km/h |
| 23:00 | light drizzle | 4 °C | 0.4 mm | 36 % | 9 km/h |
| 00:00 | drizzle | 4 °C | 0.9 mm | 42 % | 8 km/h |
| 01:00 | light rain | 4 °C | 1.8 mm | 47 % | 10 km/h |
| 02:00 | rain | 5 °C | 2.8 mm | 52 % | 13 km/h |
| 03:00 | light rain | 5 °C | 1.5 mm | 58 % | 18 km/h |
| 04:00 | light drizzle | 5 °C | 0.3 mm | 63 % | 17 km/h |
| 05:00 | light drizzle | 5 °C | 0.3 mm | 69 % | 19 km/h |
| 06:00 | light rain | 5 °C | 2.2 mm | 75 % | 19 km/h |
| 07:00 | light rain | 6 °C | 1.7 mm | 80 % | 17 km/h |
| 08:00 | rain | 6 °C | 2.5 mm | 84 % | 9 km/h |
| 09:00 | rain | 9 °C | 3.2 mm | 88 % | 12 km/h |
| 10:00 | drizzle | 13 °C | 0.5 mm | 90 % | 23 km/h |
| 11:00 | drizzle | 13 °C | 0.6 mm | 91 % | 20 km/h |
| 12:00 | light rain | 14 °C | 1.6 mm | 91 % | 24 km/h |
| 13:00 | heavy drizzle | 13 °C | 1.0 mm | 90 % | 25 km/h |
Location of Chaumont-Gistoux
Chaumont-Gistoux lies at 80 m, 14 m below the average of the 26 places we cover in the province of Walloon Brabant (94 m). That makes it the 10th lowest of the 26. The main town, Wavre, lies 7 km to the north-west. The nearest places we cover are Incourt (7 km to the east), Grez-Doiceau (7 km to the north), Walhain (8 km to the south) and Mont-Saint-Guibert (8 km to the south-west). With about 11,798 inhabitants according to GeoNames, Chaumont-Gistoux is the 11th largest of the 26 places we cover in the province of Walloon Brabant. Of the places of interest on this site, the nearest are Villers Abbey (sight, 16 km to the south-west) and Sonian Forest (natural site, 22 km to the north-west).
Today is close to the November normal (10.1 °C).
Climate of Chaumont-Gistoux: 1991–2020 normals
In Chaumont-Gistoux, July is typically the warmest month (up to 23.7 °C on average), while January is the coldest at 1.5 °C. August sees the most rain, with around 95 mm.
By season (average highs, 1991–2020 normals): winter 6.8 °C and 232 mm of rain, spring 15.2 °C and 171 mm, summer 22.9 °C and 255 mm, autumn 15.1 °C and 216 mm. The wettest season is summer (29 % of the annual total), the driest spring (20 %).
| Max T (°C) | Min T (°C) | Rainfall (mm) | Rainy days | |
|---|---|---|---|---|
| January | 6.3 | 1.5 | 76 | 14 |
| February | 7.4 | 1.5 | 66 | 12 |
| March | 11.4 | 3.6 | 58 | 12 |
| April | 15.3 | 6.1 | 50 | 11 |
| May | 18.8 | 9.6 | 63 | 13 |
| June | 21.6 | 12.6 | 75 | 12 |
| July | 23.7 | 14.7 | 85 | 14 |
| August | 23.4 | 14.3 | 95 | 14 |
| September | 19.9 | 11.3 | 70 | 12 |
| October | 15.2 | 8.2 | 72 | 13 |
| November | 10.1 | 4.6 | 74 | 13 |
| December | 6.7 | 2.1 | 90 | 14 |
Compared with Wavre, the main town 7 km to the north-west, highs in the warmest month are 0.1 °C lower here, and the year brings 15 mm more precipitation. In no month does the average low fall below 0 °C; in 3 months the average high exceeds 20 °C (June, July and August).
Nearby places with normals of their own (from another station or reanalysis grid cell) compare as follows: Incourt (7 km to the east): summers 0.4 °C cooler and 7 mm drier a year; Walhain (8 km to the south): summers 0.5 °C cooler and 21 mm wetter a year; Mont-Saint-Guibert (8 km to the south-west): equally warm summers and 11 mm wetter a year. Among the 26 places we cover in the province of Walloon Brabant whose normals come from the ERA5 reanalysis, Chaumont-Gistoux ranks 5th for summer warmth and 12th for annual precipitation. The warmest summers are in Grez-Doiceau and the coolest in Ramillies; the wettest year is in Walhain and the driest in Rebecq.
What is the warmest month in Chaumont-Gistoux?
The warmest month in Chaumont-Gistoux is typically July, averaging 23.7 °C (1991–2020 normal). The coldest is January, at 1.5 °C.
How many rainy days does Chaumont-Gistoux get per year?
Chaumont-Gistoux sees about 154 rainy days a year, adding up to roughly 874 mm of rainfall (1991–2020 normals).
How big is the gap between summer and winter in Chaumont-Gistoux?
Between July and January, the temperature gap in Chaumont-Gistoux runs to about 22.2 °C, based on the 1991–2020 normals.