Today
During the day mostly clear, up to +61°, at night around +46°. Wind up to 11 mph. No precipitation expected.
Weather in Waltham
United States · Massachusetts · 42.3765, -71.2356
Today Now 8:10 AM
+46° Mostly clear
Hourly forecast
Today10/20
Temperature°F
Cloudiness
Precipitation
Windmph
Wind gusts
Humidity
PressureinHg
Dew point°F
Visibilitymi
UV index
Forecast in words
Tomorrow
Tomorrow partly cloudy, high +52°, low +45° — 9° colder than today.
Week
During the week the thermometer stays between +36°…+68°. Weekly maximum — +68° (Mon). Coldest night — Sat, around +36°. No precipitation expected this week. Clear days — 5. It warms up by the end of the week.
Week vs norm
- Today 10/20 +61° as usual usually +61°
- Tomorrow 10/21 +52° −9° usually +60°
- Thu 10/22 +61° as usual usually +60°
- Fri 10/23 +52° −8° usually +60°
- Sat 10/24 +59° as usual usually +59°
- Sun 10/25 +63° +4° usually +59°
- Mon 10/26 +68° +9° usually +59°
- Tue 10/27 +57° −1° usually +58°
Difference between forecast daytime high and the 1991–2020 norm for this date.
This day, October 20
Today is cooler than usual for this date.
- Heat record +75° 2024
- Cold record +31° 2003
- Most precipitation 3.7 in 1996
- Strongest gust 55 mph 1996
Records for this calendar date, 1991-2024, ERA5 reanalysis.
Climate in Waltham
Today is about 3° colder than usual for October.
| Month | Daytime / Nighttime | Average | Precipitation in |
|---|---|---|---|
| Jan | +35° / +21° | +27° | 3.6 |
| Feb | +37° / +22° | +29° | 3.1 |
| Mar | +45° / +29° | +36° | 4.4 |
| Apr | +56° / +39° | +47° | 3.8 |
| May | +67° / +49° | +57° | 3.3 |
| Jun | +76° / +59° | +67° | 3.4 |
| Jul | +82° / +65° | +73° | 3.3 |
| Aug | +81° / +64° | +72° | 3.5 |
| Sep | +74° / +57° | +65° | 3.5 |
| Oct | +63° / +47° | +54° | 3.9 |
| Nov | +51° / +36° | +43° | 3.3 |
| Dec | +40° / +27° | +33° | 4.4 |
Climatic normals for 1991–2025 years from ERA5-Land reanalysis.
Astronomical data
Sunrise / sunset
7:03 AM | 5:54 PM
Moon
3:19 PM | 12:47 AM
Moon phase
Waxing gibbous 69%
Next solar eclipse
Calculating for this city…