Waltham, MA 02452 Hourly Weather

Middlesex County9:48 PM EDT42.39°N, 71.22°W

Next 48 hours

9 PM Wed Oct 21 12 AM 3 AM 6 AM 9 AM 12 PM 3 PM 6 PM 9 PM Thu Oct 22 12 AM 3 AM 6 AM 9 AM 12 PM 3 PM 6 PM 35° 40° 45° 50° 55° 60° %
TemperatureFeels likeChance of precipitationNight
Tuesday, October 203 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
9 PM Clear 50° 47° 0% 0.00 in NE 7 G14 71% 41° 4% 0
10 PM Clear 49° 46° 0% 0.00 in NE 8 G15 74% 41° 3% 0
11 PM Clear 48° 44° 0% 0.00 in NE 8 G15 80% 42° 3% 0
Wednesday, October 2124 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Clear 48° 44° 0% 0.00 in NE 9 G16 77% 41° 4% 0
1 AM Clear 47° 43° 0% 0.00 in NE 9 G16 79% 41° 5% 0
2 AM Mostly Clear 46° 41° 0% 0.00 in NE 9 G16 79% 40° 7% 0
3 AM Mostly Clear 45° 40° 0% 0.00 in N 10 G16 82% 40° 14% 0
4 AM Mostly Clear 44° 39° 0% 0.00 in N 10 G17 82% 39° 20% 0
5 AM Partly Cloudy 43° 37° 0% 0.00 in N 10 G18 86% 39° 27% 0
6 AM Mostly Sunny 42° 36° 0% 0.00 in N 10 G20 86% 38° 44% 0
7 AM Partly Sunny 41° 35° 0% 0.00 in N 10 G18 86% 37° 61% 0
8 AM Mostly Cloudy 42° 36° 0% 0.00 in N 10 G21 86% 38° 78% 0
9 AM Mostly Cloudy 45° 39° 0% 0.00 in N 12 G22 79% 39° 71% 1
10 AM Partly Sunny 47° 42° 0% 0.00 in N 12 G22 74% 39° 65% 2
11 AM Partly Sunny 49° 44° 0% 0.00 in NE 13 G23 71% 40° 59% 3
12 PM Partly Sunny 50° 45° 0% 0.00 in NE 13 G23 68% 40° 58% 4
1 PM Partly Sunny 51° 51° 0% 0.00 in NE 13 G24 66% 40° 57% 4
2 PM Partly Sunny 52° 52° 0% 0.00 in NE 13 G24 63% 40° 56% 3
3 PM Partly Sunny 52° 52° 0% 0.00 in NE 13 G23 63% 40° 61% 2
4 PM Partly Sunny 51° 51° 1% 0.00 in NE 12 G22 66% 40° 65% 1
5 PM Mostly Cloudy 51° 51° 1% 0.00 in NE 10 G21 66% 40° 70% 0
6 PM Mostly Cloudy 48° 44° 3% 0.00 in NE 9 G18 74% 40° 68% 0
7 PM Mostly Cloudy 46° 41° 5% 0.00 in NE 9 G16 83% 41° 67% 0
8 PM Mostly Cloudy 45° 41° 7% 0.00 in NE 8 G15 86% 41° 65% 0
9 PM Mostly Cloudy 45° 40° 9% 0.00 in NE 9 G15 86% 41° 68% 0
10 PM Mostly Cloudy 44° 39° 10% 0.00 in N 9 G15 89% 41° 71% 0
11 PM Mostly Cloudy 44° 39° 12% 0.00 in N 9 89% 41° 73% 0
Thursday, October 2224 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Cloudy 43° 38° 9% 0.00 in N 9 G15 93% 41° 71% 0
1 AM Mostly Cloudy 43° 37° 6% 0.00 in N 10 G16 89% 40° 68% 0
2 AM Mostly Cloudy 41° 35° 3% 0.00 in N 10 G16 96% 40° 65% 0
3 AM Mostly Cloudy 40° 33° 3% 0.00 in N 10 G16 96% 39° 65% 0
4 AM Mostly Cloudy 40° 33° 3% 0.00 in N 10 G16 92% 38° 65% 0
5 AM Mostly Cloudy 39° 32° 3% 0.00 in N 10 G17 96% 38° 65% 0
6 AM Partly Sunny 39° 32° 2% 0.00 in N 10 G17 92% 37° 59% 0
7 AM Partly Sunny 39° 33° 2% 0.00 in N 8 G17 89% 36° 53% 0
8 AM Mostly Sunny 42° 37° 1% 0.00 in N 8 G18 79% 36° 47% 0
9 AM Mostly Cloudy 44° 39° 0% 0.00 in N 8 G15 89% 41° 74% 1
10 AM Partly Sunny 48° 44° 0% 0.00 in N 8 G16 77% 41° 60% 2
11 AM Mostly Sunny 52° 52° 0% 0.00 in N 9 G17 66% 41° 45% 3
12 PM Mostly Sunny 56° 56° 0% 0.00 in N 9 G18 57% 41° 42% 3
1 PM Mostly Sunny 58° 58° 0% 0.00 in N 10 G20 55% 42° 38% 3
2 PM Mostly Sunny 60° 60° 0% 0.00 in N 10 G20 51% 42° 35% 3
3 PM Mostly Sunny 61° 61° 0% 0.00 in N 10 G20 50% 42° 27% 2
4 PM Sunny 61° 61° 0% 0.00 in N 10 G20 50% 42° 19% 1
5 PM Sunny 59° 59° 0% 0.00 in N 10 G20 53% 42° 11% 0
6 PM Mostly Clear 57° 57° 0% 0.00 in N 10 G21 57% 42° 10% 0
7 PM Mostly Clear 54° 54° 0% 0.00 in N 12 G22 64% 42° 9% 0
8 PM Mostly Clear 51° 51° 0% 0.00 in N 12 G22 71% 42° 8% 0
9 PM Mostly Clear 49° 44° 0% 0.00 in N 12 G21 74% 41° 9% 0
10 PM Mostly Clear 47° 42° 0% 0.00 in N 10 G20 76% 40° 9% 0
11 PM Mostly Clear 46° 41° 0% 0.00 in N 10 G18 76% 39° 10% 0
Friday, October 2324 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 44° 38° 0% 0.00 in N 10 G17 79% 38° 10% 0
1 AM Mostly Clear 43° 38° 0% 0.00 in N 9 G16 82% 38° 9% 0
2 AM Mostly Clear 41° 35° 0% 0.00 in N 9 G15 86% 37° 9% 0
3 AM Mostly Clear 39° 33° 0% 0.00 in N 9 G15 89% 36° 9% 0
4 AM Mostly Clear 38° 32° 0% 0.00 in N 9 G16 89% 35° 9% 0
5 AM Mostly Clear 37° 30° 0% 0.00 in N 9 G17 89% 34° 9% 0
6 AM Sunny 36° 29° 0% 0.00 in N 9 G17 89% 33° 9% 0
7 AM Sunny 36° 29° 0% 0.00 in N 10 G18 89% 33° 8% 0
8 AM Sunny 36° 29° 0% 0.00 in N 10 G18 89% 33° 8% 0
9 AM Sunny 39° 32° 0% 0.00 in N 10 G20 82% 34° 8% –
10 AM Sunny 42° 36° 0% 0.00 in N 12 G21 73% 34° 9% –
11 AM Sunny 45° 39° 0% 0.00 in N 12 G22 68% 35° 9% –
12 PM Sunny 47° 42° 0% 0.00 in N 12 G22 63% 35° 10% –
1 PM Sunny 49° 45° 0% 0.00 in N 10 G21 56% 34° 11% –
2 PM Sunny 51° 51° 1% 0.00 in N 9 G18 50% 33° 12% –
3 PM Sunny 52° 52° 1% 0.00 in N 8 G16 46% 32° 11% –
4 PM Sunny 52° 52° 1% 0.00 in N 7 G14 46% 32° 10% –
5 PM Sunny 51° 51° 1% 0.00 in N 6 G12 48% 32° 9% –
6 PM Mostly Clear 49° 47° 1% 0.00 in N 5 56% 34° 9% –
7 PM Mostly Clear 46° 44° 1% 0.00 in N 5 65% 35° 10% –
8 PM Mostly Clear 43° 41° 1% 0.00 in N 3 76% 36° 10% –
9 PM Mostly Clear 42° 40° 1% 0.00 in N 3 79% 36° 10% –
10 PM Mostly Clear 41° 39° 0% 0.00 in N 3 82% 36° 10% –
11 PM Mostly Clear 40° 38° 0% 0.00 in NW 3 85% 36° 10% –
Saturday, October 2424 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 39° 37° 0% 0.00 in NW 3 89% 36° 10% –
1 AM Mostly Clear 37° 34° 0% 0.00 in NW 3 96% 36° 10% –
2 AM Mostly Clear 36° 33° 0% 0.00 in NW 3 100% 36° 11% –
3 AM Mostly Clear 35° 32° 0% 0.00 in NW 3 100% 35° 11% –
4 AM Mostly Clear 34° 31° 0% 0.00 in NW 3 100% 34° 11% –
5 AM Mostly Clear 34° 31° 0% 0.00 in NW 3 100% 34° 11% –
6 AM Sunny 33° 30° 0% 0.00 in NW 3 100% 33° 11% –
7 AM Sunny 33° 30° 0% 0.00 in W 3 100% 33° 11% –
8 AM Sunny 34° 31° 0% 0.00 in W 3 100% 34° 14% –
9 AM Sunny 38° 36° 0% 0.00 in W 3 89% 35° 14% –
10 AM Sunny 43° 40° 0% 0.00 in W 5 76% 36° 14% –
11 AM Sunny 48° 46° 0% 0.00 in W 5 65% 37° 14% –
12 PM Sunny 51° 51° 0% 0.00 in W 5 56% 36° 14% –
1 PM Sunny 54° 54° 0% 0.00 in W 5 50% 36° 14% –
2 PM Sunny 55° 55° 0% 0.00 in W 5 47% 35° 2% –
3 PM Sunny 56° 56° 0% 0.00 in W 3 47% 36° 2% –
4 PM Sunny 57° 57° 0% 0.00 in W 3 47% 37° 2% –
5 PM Sunny 56° 56° 0% 0.00 in W 2 51% 38° 2% –
6 PM Clear 54° 54° 0% 0.00 in W 2 57% 39° 2% –
7 PM Clear 50° 49° 0% 0.00 in W 3 68% 40° 2% –
8 PM Clear 47° 46° 0% 0.00 in W 3 76% 40° 2% –
9 PM Clear 45° 44° 0% 0.00 in W 3 82% 40° 2% –
10 PM Clear 43° 41° 0% 0.00 in W 3 86% 39° 2% –
11 PM Clear 41° 39° 0% 0.00 in W 3 93% 39° 2% –
Sunday, October 2524 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Clear 40° 38° 0% 0.00 in W 3 96% 39° 2% –
1 AM Clear 39° 37° 0% 0.00 in W 3 96% 38° 2% –
2 AM Clear 38° 36° 0% 0.00 in W 3 100% 38° 3% –
3 AM Clear 37° 34° 0% 0.00 in W 3 100% 37° 3% –
4 AM Clear 37° 34° 0% 0.00 in W 3 96% 36° 3% –
5 AM Clear 37° 34° 0% 0.00 in W 3 96% 36° 3% –
6 AM Sunny 36° 33° 0% 0.00 in W 3 100% 36° 3% –
7 AM Sunny 36° 33° 0% 0.00 in W 3 100% 36° 3% –
8 AM Sunny 37° 34° 0% 0.00 in W 3 100% 37° 2% –
9 AM Sunny 41° 39° 0% 0.00 in W 3 93% 39° 2% –
10 AM Sunny 47° 46° 0% 0.00 in W 3 79% 41° 2% –
11 AM Sunny 53° 53° 0% 0.00 in SW 3 66% 42° 2% –
12 PM Sunny 57° 57° 0% 0.00 in SW 3 57% 42° 2% –
1 PM Sunny 60° 60° 0% 0.00 in SW 5 51% 42° 2% –
2 PM Sunny 62° 62° 0% 0.00 in SW 5 48% 42° 3% –
3 PM Sunny 63° 63° 0% 0.00 in SW 5 48% 43° 3% –
4 PM Sunny 63° 63° 0% 0.00 in SW 3 48% 43° 3% –
5 PM Sunny 62° 62° 0% 0.00 in SW 3 52% 44° 3% –
6 PM Clear 59° 59° 0% 0.00 in SW 3 60% 45° 3% –
7 PM Clear 56° 56° 0% 0.00 in SW 5 66% 45° 3% –
8 PM Mostly Clear 52° 52° 0% 0.00 in SW 5 77% 45° 7% –
9 PM Mostly Clear 49° 47° 0% 0.00 in SW 5 86% 45° 7% –
10 PM Mostly Clear 47° 45° 0% 0.00 in SW 5 89% 44° 7% –
11 PM Mostly Clear 46° 44° 0% 0.00 in SW 5 93% 44° 7% –
Monday, October 2624 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 45° 43° 0% 0.00 in SW 5 96% 44° 7% –
1 AM Mostly Clear 44° 41° 0% 0.00 in SW 6 100% 44° 7% –
2 AM Mostly Clear 44° 41° 0% 0.00 in SW 6 100% 44° 14% –
3 AM Mostly Clear 43° 39° 0% 0.00 in SW 6 100% 43° 14% –
4 AM Mostly Clear 42° 38° 0% 0.00 in SW 6 100% 42° 14% –
5 AM Mostly Clear 42° 38° 0% 0.00 in SW 6 100% 42° 14% –
6 AM Sunny 41° 37° 0% 0.00 in SW 6 100% 41° 14% –
7 AM Sunny 41° 37° 0% 0.00 in SW 6 100% 41° 14% –
8 AM Sunny 43° 39° 0% 0.00 in SW 6 100% 43° 22% –
9 AM Sunny 47° 44° 0% 0.00 in SW 6 89% 44° 22% –
10 AM Sunny 52° 52° 0% 0.00 in W 6 80% 46° 22% –
11 AM Sunny 57° 57° 0% 0.00 in W 6 69% 47° 22% –
12 PM Sunny 61° 61° 0% 0.00 in W 6 62% 48° 22% –
1 PM Sunny 63° 63° 0% 0.00 in W 6 G12 60% 49° 22% –
2 PM Sunny 65° 65° 0% 0.00 in W 6 G12 56% 49° 22% –
3 PM Sunny 66° 66° 0% 0.00 in W 6 54% 49° 22% –
4 PM Sunny 66° 66° 0% 0.00 in W 5 54% 49° 22% –
5 PM Sunny 65° 65° 0% 0.00 in W 5 56% 49° 22% –
6 PM Mostly Clear 63° 63° 0% 0.00 in W 5 60% 49° 22% –
7 PM Mostly Clear 60° 60° 0% 0.00 in W 5 67% 49° 22% –
8 PM Partly Cloudy 57° 57° 2% 0.00 in W 5 75% 49° 26% –
9 PM Partly Cloudy 55° 55° 2% 0.00 in W 5 80% 49° 26% –
10 PM Partly Cloudy 53° 53° 2% 0.00 in W 5 83% 48° 26% –
11 PM Partly Cloudy 51° 51° 2% 0.00 in W 5 89% 48° 26% –
Tuesday, October 279 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Partly Cloudy 50° 48° 2% 0.00 in W 5 93% 48° 26% –
1 AM Partly Cloudy 49° 47° 2% 0.00 in NW 5 93% 47° 26% –
2 AM Partly Cloudy 48° 46° 2% 0.00 in NW 5 96% 47° 33% –
3 AM Partly Cloudy 47° 45° 2% 0.00 in NW 5 96% 46° 33% –
4 AM Partly Cloudy 46° 43° 3% 0.00 in NW 6 100% 46° 33% –
5 AM Partly Cloudy 46° 43° 3% 0.00 in NW 6 96% 45° 33% –
6 AM Mostly Sunny 45° 42° 3% 0.00 in NW 6 100% 45° 33% –
7 AM Mostly Sunny 45° 42° 3% 0.00 in NW 6 100% 45° 33% –
8 AM Mostly Sunny 46° 43° 3% 0.00 in NW 6 G12 96% 45° 44% –

National Weather Service forecast updated 47 min ago. Precipitation amounts are the forecast liquid equivalent for each hour.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.