Waltham weather — 10-day forecast

Temperature, rain, wind and feels-like in Waltham, hour by hour and over 10 days, with the seasonal normal for context.

Now

Reading from 21:00 · Meteo-France AROME 1.3 km model

18 °C

Clear sky

5.1 km/hforce 1

Next 12 h

  • 2118°
  • 2216°
  • 2315°
  • 0014°
  • 0113°
  • 0213°
  • 0312°
  • 0411°
  • 0510°
  • 05:28Sunrise
  • 0610°
  • 0712°
  • 0816°
  • 0919°

10°06:00 19°09:00

Humidity
61 %
Dew point
10 °C
Gusts
12.0 km/h
Clouds
0 %
Pressure
1,022 hPa

Grid point 0.4 km away · 1.3 km grid · elevation 20 m

Air quality

The European air-quality index for the city, and the pollutants that set it.

Reading from 19:00
29
Fair

Index set by Ozone

Ozone
72.0µg/m³
PM2.5
9.2µg/m³
PM10
12.4µg/m³
Nitrogen dioxide
3.6µg/m³
Sulphur dioxide
1.4µg/m³
Carbon monoxide
130.0µg/m³
Dust (AOD)
0.00

Generated using Copernicus Atmosphere Monitoring Service information

Hour by hour

Step-by-step detail: temperature, wind, cloud cover and ultraviolet.

Estimated from a deterministic model, not an ensemble probability.
°C

10 days

Each day's extremes and the chance of rain, out to the end of the run.

10° → 29°

Rain probability (> 1 mm): 50 ECMWF ensemble members.

  • Today

    Partly cloudy

    24°

    15°

  • Sat

    Partly cloudy

    28°

    10°

  • Sun

    Partly cloudy12 %

    29°

    17°

  • Mon

    Light drizzle0 mm

    22°

    14°

  • Tue

    Partly cloudy

    24°

    12°

  • Wed

    Mainly clear

    27°

    15°

  • Thu

    Partly cloudy

    29°

    20°

  • Fri

    Partly cloudy

    24°

    19°

  • Sat

    Partly cloudy0 mm

    21°

    17°

  • Sun

    Light drizzle1 mm

    23°

    16°

Sun and UV

Sunrise, sunset, day length and ultraviolet intensity.

Max UV6high
Sunrise
05:26
Daylight
15 h 20
Sunset
20:46

Radiation · 10.9 MJ/m²

Sea state

Sea state at the marine grid point closest to the city.

0.5 mperiod 8 s 16°

Significant height: the mean of the highest third of waves. Individual waves reach about twice it.

Data: ECMWF

Today in Waltham the mean temperature will be 20.7 °C — +4.1 °C against the normal for 7 August, measured from 1940 to 2026. (1,290 obs.)

Waltham climate — normals and trends