Chelmsford, MA 01824 Hourly Weather

Middlesex County9:39 AM EDT42.59°N, 71.36°W

Next 48 hours

9 AM 12 PM 3 PM 6 PM 9 PM Fri Oct 23 12 AM 3 AM 6 AM 9 AM 12 PM 3 PM 6 PM 9 PM Sat Oct 24 12 AM 3 AM 6 AM 30° 40° 50° 60° %
TemperatureFeels likeChance of precipitationNight
Thursday, October 2215 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
9 AM Mostly Cloudy 44° 38° 0% 0.00 in N 10 G20 70% 35° 78% 1
10 AM Mostly Cloudy 49° 45° 0% 0.00 in N 10 G21 61% 36° 72% 2
11 AM Mostly Cloudy 53° 53° 0% 0.00 in N 12 G22 54% 37° 74% 3
12 PM Mostly Cloudy 56° 56° 0% 0.00 in N 12 G22 47% 36° 75% 3
1 PM Mostly Sunny 60° 60° 0% 0.00 in N 12 G22 39% 35° 43% 3
2 PM Sunny 61° 61° 0% 0.00 in N 12 G22 36% 34° 23% 3
3 PM Mostly Sunny 62° 62° 0% 0.00 in N 12 G21 38% 36° 27% 2
4 PM Sunny 62° 62° 0% 0.00 in N 10 G21 41% 38° 22% 1
5 PM Sunny 61° 61° 0% 0.00 in N 10 G21 46% 40° 17% 0
6 PM Mostly Clear 59° 59° 0% 0.00 in N 12 G21 49% 40° 21% 0
7 PM Clear 56° 56° 0% 0.00 in N 12 G22 55% 40° 5% 0
8 PM Mostly Clear 53° 53° 0% 0.00 in N 12 G21 64% 41° 7% 0
9 PM Mostly Clear 51° 51° 0% 0.00 in N 12 G20 63% 39° 13% 0
10 PM Mostly Clear 49° 45° 0% 0.00 in N 10 G18 66% 38° 11% 0
11 PM Clear 47° 42° 0% 0.00 in N 10 G17 68% 37° 4% 0
Friday, October 2324 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Clear 45° 40° 0% 0.00 in N 9 G16 70% 36° 1% 0
1 AM Clear 44° 39° 0% 0.00 in N 9 G15 70% 35° 3% 0
2 AM Clear 42° 36° 0% 0.00 in N 9 73% 34° 2% 0
3 AM Clear 40° 36° 0% 0.00 in N 6 G12 76% 33° 4% 0
4 AM Clear 39° 35° 0% 0.00 in N 6 G12 76% 32° 2% 0
5 AM Clear 37° 32° 0% 0.00 in N 6 G12 82% 32° 3% 0
6 AM Patchy Frost 36° 31° 0% 0.00 in N 6 82% 31° 3% 0
7 AM Patchy Frost 35° 30° 0% 0.00 in N 6 82% 30° 2% 0
8 AM Patchy Frost 35° 30° 0% 0.00 in N 6 G12 82% 30° 1% 0
9 AM Sunny 39° 34° 0% 0.00 in N 7 G13 67% 29° 0% 1
10 AM Sunny 45° 41° 0% 0.00 in N 8 G15 51% 28° 0% 2
11 AM Sunny 48° 44° 0% 0.00 in N 8 G15 46% 28° 1% 3
12 PM Sunny 51° 51° 0% 0.00 in N 8 G15 39% 27° 2% 3
1 PM Sunny 53° 53° 0% 0.00 in N 7 G14 36% 27° 3% 3
2 PM Sunny 54° 54° 0% 0.00 in N 7 G13 34% 26° 3% 2
3 PM Sunny 55° 55° 0% 0.00 in N 6 G12 32% 26° 3% 1
4 PM Sunny 55° 55° 0% 0.00 in N 5 32% 26° 2% 1
5 PM Sunny 53° 53° 0% 0.00 in N 3 36% 27° 1% 0
6 PM Clear 50° 50° 0% 0.00 in N 2 42% 28° 0% 0
7 PM Clear 47° 47° 0% 0.00 in N 2 51% 30° 0% 0
8 PM Clear 41° 41° 0% 0.00 in N 1 70% 32° 0% 0
9 PM Clear 39° 39° 0% 0.00 in N 1 73% 31° 0% 0
10 PM Clear 37° 37° 0% 0.00 in N 1 79% 31° 3% 0
11 PM Patchy Frost 35° 35° 0% 0.00 in NW 2 85% 31° 5% 0
Saturday, October 2424 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Patchy Frost 33° 33° 0% 0.00 in NW 2 92% 31° 5% 0
1 AM Areas Of Frost 32° 32° 0% 0.00 in NW 2 92% 30° 4% 0
2 AM Areas Of Frost 31° 31° 0% 0.00 in NW 2 96% 30° 4% 0
3 AM Areas Of Frost 30° 30° 0% 0.00 in NW 2 96% 29° 5% 0
4 AM Areas Of Frost 30° 30° 0% 0.00 in NW 2 92% 28° 6% 0
5 AM Areas Of Frost 29° 29° 0% 0.00 in NW 2 96% 28° 7% 0
6 AM Areas Of Frost 29° 29° 0% 0.00 in NW 2 96% 28° 7% 0
7 AM Areas Of Frost 29° 29° 0% 0.00 in NW 2 96% 28° 7% 0
8 AM Areas Of Frost 31° 31° 0% 0.00 in W 2 92% 29° 7% 0
9 AM Patchy Frost 36° 36° 0% 0.00 in W 2 82% 31° 5% 1
10 AM Sunny 43° 43° 0% 0.00 in NW 2 67% 33° 4% 2
11 AM Sunny 49° 49° 0% 0.00 in NW 2 56% 34° 2% 3
12 PM Sunny 53° 53° 0% 0.00 in NW 2 48% 34° 3% 3
1 PM Sunny 56° 56° 0% 0.00 in NW 2 40% 32° 3% 3
2 PM Sunny 57° 57° 0% 0.00 in NW 2 38% 32° 4% 2
3 PM Sunny 58° 58° 0% 0.00 in NW 2 39% 33° 3% 1
4 PM Sunny 59° 59° 0% 0.00 in NW 2 42% 36° 2% 1
5 PM Sunny 57° 57° 0% 0.00 in N 1 47% 37° 1% 0
6 PM Clear 54° 54° 0% 0.00 in W 1 52% 37° 1% 0
7 PM Clear 50° 50° 0% 0.00 in W 1 58% 36° 0% 0
8 PM Clear 46° 46° 0% 0.00 in W 1 65% 35° 0% 0
9 PM Clear 42° 42° 0% 0.00 in W 1 73% 34° 1% –
10 PM Clear 39° 39° 0% 0.00 in W 1 82% 34° 2% –
11 PM Patchy Frost 36° 36° 0% 0.00 in W 1 89% 33° 3% –
Sunday, October 2524 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Patchy Frost 34° 34° 0% 0.00 in W 1 96% 33° 2% –
1 AM Areas Of Frost 32° 32° 0% 0.00 in W 1 100% 32° 2% –
2 AM Areas Of Frost 31° 31° 0% 0.00 in W 1 100% 31° 1% –
3 AM Areas Of Frost 31° 31° 0% 0.00 in W 1 100% 31° 1% –
4 AM Areas Of Frost 31° 31° 0% 0.00 in W 1 100% 31° 2% –
5 AM Areas Of Frost 31° 31° 0% 0.00 in W 1 96% 30° 2% –
6 AM Areas Of Frost 30° 30° 0% 0.00 in W 1 96% 29° 2% –
7 AM Areas Of Frost 30° 30° 0% 0.00 in W 2 96% 29° 3% –
8 AM Areas Of Frost 32° 32° 0% 0.00 in W 2 92% 30° 3% –
9 AM Sunny 38° 38° 0% 0.00 in W 2 79% 32° 2% –
10 AM Sunny 47° 47° 0% 0.00 in W 1 63% 35° 2% –
11 AM Sunny 54° 54° 0% 0.00 in SW 1 52% 37° 1% –
12 PM Sunny 59° 59° 0% 0.00 in SW 2 42% 36° 1% –
1 PM Sunny 62° 62° 0% 0.00 in SW 2 36% 35° 2% –
2 PM Sunny 63° 63° 0% 0.00 in SW 3 34% 34° 2% –
3 PM Sunny 64° 64° 0% 0.00 in SW 3 35% 36° 2% –
4 PM Sunny 63° 63° 0% 0.00 in SW 2 39% 38° 2% –
5 PM Sunny 61° 61° 0% 0.00 in SW 2 46% 40° 2% –
6 PM Clear 57° 57° 0% 0.00 in SW 2 53% 40° 2% –
7 PM Clear 52° 52° 0% 0.00 in SW 2 61% 39° 2% –
8 PM Clear 50° 50° 0% 0.00 in SW 2 66% 39° 2% –
9 PM Clear 47° 47° 0% 0.00 in SW 2 74% 39° 2% –
10 PM Clear 43° 43° 0% 0.00 in SW 2 82% 38° 2% –
11 PM Clear 41° 41° 0% 0.00 in SW 2 89% 38° 2% –
Monday, October 2624 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Clear 39° 39° 0% 0.00 in SW 2 92% 37° 2% –
1 AM Clear 39° 39° 0% 0.00 in SW 2 92% 37° 2% –
2 AM Mostly Clear 38° 38° 0% 0.00 in SW 2 92% 36° 6% –
3 AM Mostly Clear 37° 37° 0% 0.00 in SW 2 96% 36° 6% –
4 AM Mostly Clear 36° 36° 0% 0.00 in W 2 96% 35° 6% –
5 AM Mostly Clear 36° 36° 0% 0.00 in W 2 96% 35° 6% –
6 AM Sunny 35° 35° 0% 0.00 in W 2 96% 34° 6% –
7 AM Sunny 35° 35° 0% 0.00 in W 2 96% 34° 6% –
8 AM Sunny 37° 37° 0% 0.00 in W 2 92% 35° 6% –
9 AM Sunny 43° 43° 0% 0.00 in W 2 79% 37° 6% –
10 AM Sunny 51° 51° 0% 0.00 in W 2 68% 41° 6% –
11 AM Sunny 58° 58° 0% 0.00 in W 2 57% 43° 6% –
12 PM Sunny 62° 62° 0% 0.00 in W 2 50% 43° 6% –
1 PM Sunny 65° 65° 0% 0.00 in W 3 45% 43° 6% –
2 PM Sunny 67° 67° 0% 0.00 in W 3 42% 43° 12% –
3 PM Sunny 68° 68° 0% 0.00 in W 3 42% 44° 12% –
4 PM Sunny 68° 68° 0% 0.00 in W 2 45% 46° 12% –
5 PM Sunny 67° 67° 0% 0.00 in W 2 49% 47° 12% –
6 PM Mostly Clear 64° 64° 0% 0.00 in W 2 54% 47° 12% –
7 PM Mostly Clear 60° 60° 0% 0.00 in W 2 60% 46° 12% –
8 PM Mostly Clear 56° 56° 0% 0.00 in W 2 66% 45° 14% –
9 PM Mostly Clear 53° 53° 0% 0.00 in W 2 74% 45° 14% –
10 PM Mostly Clear 50° 50° 0% 0.00 in NW 2 80% 44° 14% –
11 PM Mostly Clear 48° 48° 0% 0.00 in NW 2 86% 44° 14% –
Tuesday, October 2724 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 47° 47° 0% 0.00 in NW 2 89% 44° 14% –
1 AM Mostly Clear 46° 45° 0% 0.00 in NW 3 89% 43° 14% –
2 AM Partly Cloudy 46° 45° 0% 0.00 in NW 3 89% 43° 39% –
3 AM Partly Cloudy 45° 44° 0% 0.00 in NW 3 89% 42° 39% –
4 AM Partly Cloudy 45° 44° 1% 0.00 in NW 3 89% 42° 39% –
5 AM Partly Cloudy 44° 42° 1% 0.00 in NW 3 89% 41° 39% –
6 AM Mostly Sunny 43° 41° 1% 0.00 in N 3 89% 40° 39% –
7 AM Mostly Sunny 42° 40° 1% 0.00 in N 3 G8 93% 40° 39% –
8 AM Mostly Sunny 43° 41° 1% 0.00 in N 3 G8 89% 40° 44% –
9 AM Mostly Sunny 46° 45° 1% 0.00 in N 3 G9 83% 41° 44% –
10 AM Mostly Sunny 50° 48° 0% 0.00 in N 5 74% 42° 44% –
11 AM Mostly Sunny 53° 53° 0% 0.00 in N 5 G10 69% 43° 44% –
12 PM Mostly Sunny 55° 55° 1% 0.00 in N 5 G10 64% 43° 44% –
1 PM Mostly Sunny 56° 56° 1% 0.00 in N 5 G10 59% 42° 44% –
2 PM Sunny 57° 57° 1% 0.00 in N 5 G10 55% 41° 24% –
3 PM Sunny 58° 58° 1% 0.00 in N 5 53% 41° 24% –
4 PM Sunny 58° 58° 1% 0.00 in N 3 G8 53% 41° 24% –
5 PM Sunny 57° 57° 2% 0.00 in N 3 55% 41° 24% –
6 PM Mostly Clear 55° 55° 2% 0.00 in N 3 59% 41° 24% –
7 PM Mostly Clear 52° 52° 2% 0.00 in NE 2 63% 40° 24% –
8 PM Mostly Clear 49° 49° 2% 0.00 in NE 2 71% 40° 24% –
9 PM Mostly Clear 46° 46° 2% 0.00 in NE 2 76% 39° 24% –
10 PM Mostly Clear 44° 44° 2% 0.00 in N 1 82% 39° 24% –
11 PM Mostly Clear 42° 42° 2% 0.00 in N 1 86% 38° 24% –
Wednesday, October 2820 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 41° 41° 2% 0.00 in N 1 86% 37° 24% –
1 AM Mostly Clear 40° 40° 2% 0.00 in N 2 89% 37° 24% –
2 AM Partly Cloudy 39° 39° 1% 0.00 in N 2 89% 36° 30% –
3 AM Partly Cloudy 38° 38° 1% 0.00 in N 2 89% 35° 30% –
4 AM Partly Cloudy 37° 37° 1% 0.00 in N 2 92% 35° 30% –
5 AM Partly Cloudy 37° 37° 1% 0.00 in N 2 89% 34° 30% –
6 AM Mostly Sunny 36° 36° 1% 0.00 in N 2 89% 33° 30% –
7 AM Mostly Sunny 36° 33° 1% 0.00 in N 3 89% 33° 30% –
8 AM Mostly Sunny 37° 34° 2% 0.00 in N 3 85% 33° 34% –
9 AM Mostly Sunny 41° 39° 2% 0.00 in NE 3 79% 35° 34% –
10 AM Mostly Sunny 46° 45° 2% 0.00 in E 3 68% 36° 34% –
11 AM Mostly Sunny 50° 49° 2% 0.00 in SE 3 63% 38° 34% –
12 PM Mostly Sunny 53° 53° 2% 0.00 in SE 3 57% 38° 34% –
1 PM Mostly Sunny 54° 54° 2% 0.00 in S 3 55% 38° 34% –
2 PM Mostly Sunny 55° 55° 1% 0.00 in S 3 51% 37° 47% –
3 PM Mostly Sunny 56° 56° 1% 0.00 in S 3 49% 37° 47% –
4 PM Mostly Sunny 55° 55° 1% 0.00 in S 3 53% 38° 47% –
5 PM Mostly Sunny 54° 54° 1% 0.00 in S 3 55% 38° 47% –
6 PM Partly Cloudy 52° 52° 1% 0.00 in S 3 59% 38° 47% –
7 PM Partly Cloudy 49° 49° 1% 0.00 in S 2 66% 38° 47% –

National Weather Service forecast updated 1 hr 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 4Conservative index and reflects what the press published. Terms of use.