Sunset & Sunrise Today in Chelmsford, Massachusetts
Sunrise & Sunset Tomorrow in Chelmsford: sunrise 7:00 AM, sunset 6:01 PM.
Today, Thursday, October 15, sunset in Chelmsford is at 6:02 PM and sunrise was at 6:58 AM, giving Chelmsford 11h 03m between first and last light. Local solar noon in Chelmsford falls at 12:31 PM.
Because Chelmsford is at 42.60° (the mid-latitudes), daylight swings noticeably between the long days of summer and the short days of winter. Each day is currently getting about 2 minutes shorter and 48 seconds. This is autumn in Chelmsford, so the daily sun times are still on the move.
If you're shooting at sunset, aim for Chelmsford's golden hour, about 5:25 PM to 6:20 PM. The blue hour follows, roughly 6:20 PM to 6:31 PM, as twilight deepens.
Tomorrow, sunset in Chelmsford is at 6:01 PM and sunrise at 7:00 AM — about 2m 47s less daylight than today. The table below shows how sunrise and sunset in Chelmsford drift across the whole year.
It's autumn in Chelmsford, when sunset creeps earlier each week. Over the course of the year, sunset in Chelmsford ranges from as early as 4:11 PM (around December 5) to as late as 8:27 PM (around June 26). Its longest day lands on June 21 with 15h 18m of daylight, and its shortest on December 21 with just 9h 02m.
Moon in Chelmsford today
Sunset today: Chelmsford vs nearby cities
| City | Sunrise | Sunset | Day length |
|---|---|---|---|
| Chelmsford | 6:58 AM | 6:02 PM | 11h 03m |
| Lowell | 6:58 AM | 6:02 PM | 11h 03m |
| Billerica | 6:58 AM | 6:02 PM | 11h 04m |
| Methuen | 6:58 AM | 6:02 PM | 11h 03m |
| Nashua | 6:59 AM | 6:03 PM | 11h 03m |
Chelmsford sun facts for 2026
- Longest day June 21 — 15h 18m of daylight
- Shortest day December 21 — 9h 02m
- Latest sunset 8:27 PM (June 26)
- Earliest sunset 4:11 PM (December 5)
- Earliest sunrise 5:07 AM (June 10)
- Latest sunrise 7:18 AM (October 31)
Solstices & equinoxes in Chelmsford (2026)
| Event | Date | Sunrise | Sunset | Day length |
|---|---|---|---|---|
| March equinox | Mar 20, 2026 | 6:48 AM | 6:57 PM | 12h 08m |
| June solstice (longest day) | Jun 21, 2026 | 5:08 AM | 8:26 PM | 15h 18m |
| September equinox | Sep 22, 2026 | 6:33 AM | 6:42 PM | 12h 09m |
| December solstice (shortest day) | Dec 21, 2026 | 7:12 AM | 4:14 PM | 9h 02m |
Chelmsford sunrise & sunset — next 14 days
| Date | Sunrise | Sunset | Day length | Change |
|---|---|---|---|---|
| Thu Oct 15 | 6:58 AM | 6:02 PM | 11h 03m | — |
| Fri Oct 16 | 7:00 AM | 6:01 PM | 11h 01m | −2m 47s |
| Sat Oct 17 | 7:01 AM | 5:59 PM | 10h 58m | −2m 46s |
| Sun Oct 18 | 7:02 AM | 5:58 PM | 10h 55m | −2m 45s |
| Mon Oct 19 | 7:03 AM | 5:56 PM | 10h 52m | −2m 46s |
| Tue Oct 20 | 7:04 AM | 5:54 PM | 10h 50m | −2m 44s |
| Wed Oct 21 | 7:05 AM | 5:53 PM | 10h 47m | −2m 44s |
| Thu Oct 22 | 7:07 AM | 5:51 PM | 10h 44m | −2m 43s |
| Fri Oct 23 | 7:08 AM | 5:50 PM | 10h 42m | −2m 42s |
| Sat Oct 24 | 7:09 AM | 5:48 PM | 10h 39m | −2m 42s |
| Sun Oct 25 | 7:10 AM | 5:47 PM | 10h 36m | −2m 40s |
| Mon Oct 26 | 7:12 AM | 5:46 PM | 10h 33m | −2m 40s |
| Tue Oct 27 | 7:13 AM | 5:44 PM | 10h 31m | −2m 39s |
| Wed Oct 28 | 7:14 AM | 5:43 PM | 10h 28m | −2m 37s |
Twilight times in Chelmsford today
| Phase | Begins | Ends |
|---|---|---|
| Astronomical twilight | 5:24 AM | 7:36 PM |
| Nautical twilight | 5:57 AM | 7:04 PM |
| Civil twilight | 6:29 AM | 6:31 PM |
| Morning golden hour | 6:40 AM | 7:36 AM |
| Evening golden hour | 5:25 PM | 6:20 PM |
Civil, nautical and astronomical twilight describe how far the sun is below the horizon.
Sunrise & sunset in Chelmsford by month
| Month | Sunrise | Sunset | Day length |
|---|---|---|---|
| January | 7:15 AM | 4:22 PM | 9h 06m |
| February | 6:59 AM | 4:58 PM | 9h 59m |
| March | 6:21 AM | 5:34 PM | 11h 13m |
| April | 6:27 AM | 7:11 PM | 12h 43m |
| May | 5:40 AM | 7:45 PM | 14h 05m |
| June | 5:10 AM | 8:16 PM | 15h 05m |
| July | 5:11 AM | 8:26 PM | 15h 14m |
| August | 5:37 AM | 8:05 PM | 14h 27m |
| September | 6:10 AM | 7:19 PM | 13h 08m |
| October | 6:42 AM | 6:26 PM | 11h 43m |
| November | 6:19 AM | 4:37 PM | 10h 18m |
| December | 6:56 AM | 4:12 PM | 9h 16m |
Times shown for the 1st of each month, local time.
Sunset & sunrise FAQ for Chelmsford
What time is sunset in Chelmsford today?
Sunset in Chelmsford, Massachusetts is at 6:02 PM today. It shifts by a minute or two each day as the seasons change.
What time is sunrise in Chelmsford today?
Sunrise in Chelmsford is at 6:58 AM today, with 11h 03m of daylight to follow.
What time is sunrise in Chelmsford tomorrow?
Sunrise in Chelmsford tomorrow is at 7:00 AM, and sunset tomorrow is at 6:01 PM.
What time is sunset in Chelmsford tomorrow?
Sunset in Chelmsford tomorrow is at 6:01 PM.
How long is the day in Chelmsford today?
Chelmsford gets 11h 03m of daylight today, between sunrise at 6:58 AM and sunset at 6:02 PM.
When is golden hour in Chelmsford?
The evening golden hour in Chelmsford is about 5:25 PM to 6:20 PM today — the warm, soft light ideal for photos.
When is blue hour in Chelmsford?
The evening blue hour in Chelmsford runs from about 6:20 PM to 6:31 PM today, just after sunset.
What time does it get dark in Chelmsford?
After sunset at 6:02 PM, full darkness (the end of twilight) arrives in Chelmsford at around 6:31 PM today.
When is solar noon in Chelmsford?
Solar noon — when the sun is highest in the sky over Chelmsford — is at 12:31 PM today.
Nearest cities to Chelmsford
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Learn more about the sunset
- 🌇 What is golden hour?Golden hour is the warm, soft light just after sunrise and before sunset. Learn what it is, when it happens, how long it lasts, and how to use it.
- 🌆 What is blue hour?Discover what blue hour is, when it happens, how it differs from golden hour, and expert tips for photographing the soft blue twilight. Check exact blue.
- 🌌 Twilight explained: civil, nautical & astronomicalLearn the three phases of twilight—civil, nautical, astronomical—and what they mean for photographers, stargazers, and sunset lovers.
- 🌅 Why are sunsets red and orange?Discover the science behind red and orange sunsets, from Rayleigh scattering to air quality. Learn when and where to see the most vivid colors.
- 📸 The best time to photograph a sunsetDiscover the best time to photograph a sunset, from golden hour to blue hour. Learn exact timing, camera settings, and composition tips for stunning shots.
- ☀️ What is solar noon?Solar noon is when the sun reaches its highest point. Learn why it rarely matches 12:00 PM and how to find your exact solar noon.
- 📈 Why days get longer and shorter through the yearEarth's axial tilt drives seasonal day-length changes. Learn how solstices, equinoxes, and latitude affect daylight where you live.
- 🌞 The summer solstice explainedWhat causes the summer solstice, when it happens, and how it affects sunset times. Discover the science and beauty of the year's longest day.