Observed 5:00 PM EDT at KJXN

Grass Lake, MI weather

Sunny and 64°18°, 9°5° warmer than a typical Oct 24, jacket by 8 PM.

Forecasts agree

Now 64°18°

Sunny

Wind: 6 mph9 km/h; From the east. Up to 6 mph9 km/h through 5 AM
Dew point: 46°8°; Comfortable
UV tomorrow: 4Moderate; Moderate 12–4 PM · peak 4
Air quality: 55Moderate; Main pollutant: PM2.5 (fine particles)
Pressure: 30.42 inHg1030 hPa; Falling slowly · −0.04 inHg−1.3 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Below 50°10° tonight after 9 PM
Fog tomorrow 5–10 AM
Low 41°5° tomorrow at 7 AM
Above 50°10° tomorrow by 10 AM

TonightDown to 43°6° by 3 AM · Clear
Tomorrow morningUp to 59°15° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 69°21° by 4 PM · Mostly cloudy
Tomorrow nightDown to 46°8° by 5 AM · Mostly cloudy
Monday morningUp to 60°16° by 11 AM · Mostly cloudy
Monday afternoonUp to 68°20° by 2 PM · Partly cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 5p	Sunny	66°19° (likely 63°17° to 66°19°)	66°19°	0%	3 mph5 km/h from SE, gusts 7 mph12 km/h	54%	41%	1
Sat 6p	Sunny	64°18° (likely 59°15° to 64°18°)	64°18°	0%	2 mph3 km/h from SE, gusts 6 mph10 km/h	58%	29%	0
Sat 7p	Clear	59°15° (likely 54°12° to 59°15°)	59°15°	0%	3 mph5 km/h from SE, gusts 7 mph11 km/h	69%	14%	0
Sat 8p	Clear	55°13° (likely 51°11° to 55°13°)	55°13°	0%	3 mph5 km/h from SE, gusts 10 mph16 km/h	80%	10%	0
Sat 9p	Clear	49°9° (likely 48°9° to 51°11°)	48°9°	0%	3 mph5 km/h from SE, gusts 11 mph18 km/h	96%	6%	0
Sat 10p	Clear	47°8° (likely 46°8° to 50°10°)	46°8°	0%	3 mph5 km/h from SE, gusts 11 mph18 km/h	100%	2%	0
Sat 11p	Clear	46°8° (likely 45°7° to 49°9°)	46°8°	0%	2 mph3 km/h from SE, gusts 11 mph17 km/h	100%	3%	0
Sun 12a	Clear	45°7° (likely 44°7° to 48°9°)	45°7°	0%	2 mph3 km/h from SSE, gusts 10 mph15 km/h	100%	3%	0
Sun 1a	Clear	45°7° (likely 43°6° to 47°8°)	45°7°	0%	2 mph3 km/h from SSE, gusts 9 mph14 km/h	100%	3%	0
Sun 2a	Clear	44°7° (likely 42°6° to 46°8°)	44°7°	0%	2 mph3 km/h from SSE, gusts 9 mph14 km/h	100%	7%	0
Sun 3a	Clear	43°6° (likely 41°5° to 46°8°)	43°6°	0%	2 mph3 km/h from SSE, gusts 9 mph14 km/h	100%	5%	0
Sun 4a	Mostly clear	43°6° (likely 41°5° to 45°7°)	43°6°	0%	2 mph3 km/h from SSE, gusts 8 mph13 km/h	100%	20%	0
Sun 5a	Fog	43°6° (likely 40°4° to 45°7°)	43°6°	0%	2 mph3 km/h from S, gusts 9 mph14 km/h	100%	47%	0
Sun 6a	Fog	43°6° (likely 41°5° to 44°7°)	43°6°	0%	2 mph3 km/h from S, gusts 9 mph14 km/h	100%	45%	0
Sun 7a	Fog	41°5° (likely 40°4° to 44°7°)	41°5°	0%	2 mph3 km/h from S, gusts 9 mph14 km/h	100%	35%	0
Sun 8a	Fog	41°5° (likely 40°4° to 44°7°)	41°5°	0%	2 mph3 km/h from S, gusts 10 mph16 km/h	100%	74%	0
Sun 9a	Fog	44°7° (likely 42°6° to 47°8°)	42°6°	0%	3 mph5 km/h from S, gusts 10 mph17 km/h	100%	76%	0
Sun 10a	Cloudy	52°11° (likely 50°10° to 53°12°)	52°11°	0%	3 mph5 km/h from SSW, gusts 9 mph15 km/h	89%	75%	1
Sun 11a	Cloudy	59°15° (likely 57°14° to 60°16°)	59°15°	0%	3 mph5 km/h from SSW, gusts 11 mph18 km/h	75%	79%	2
Sun 12p	Cloudy	63°17° (likely 61°16° to 66°19°)	63°17°	0%	5 mph8 km/h from SSW, gusts 12 mph19 km/h	62%	80%	3
Sun 1p	Cloudy	66°19° (likely 64°18° to 68°20°)	66°19°	0%	6 mph10 km/h from SSW, gusts 11 mph17 km/h	56%	79%	3
Sun 2p	Cloudy	68°20° (likely 66°19° to 69°21°)	68°20°	0%	6 mph10 km/h from SSW, gusts 11 mph17 km/h	53%	79%	4
Sun 3p	Cloudy	68°20° (likely 67°19° to 69°21°)	68°20°	0%	6 mph10 km/h from SSW, gusts 12 mph19 km/h	53%	81%	3
Sun 4p	Cloudy	69°21° (likely 66°19° to 69°21°)	69°21°	0%	5 mph8 km/h from SSW, gusts 12 mph19 km/h	49%	82%	2
Sun 5p	Cloudy	68°20° (likely 65°18° to 68°20°)	68°20°	0%	5 mph8 km/h from SSW, gusts 11 mph18 km/h	51%	81%	1
Sun 6p	Cloudy	66°19° (likely 62°17° to 66°19°)	66°19°	0%	3 mph5 km/h from S, gusts 10 mph16 km/h	54%	77%	1
Sun 7p	Mostly clear	62°17° (likely 58°14° to 62°17°)	62°17°	0%	3 mph5 km/h from S, gusts 7 mph12 km/h	62%	35%	0
Sun 8p	Partly cloudy	55°13° (likely 55°13° to 56°13°)	55°13°	0%	2 mph3 km/h from S, gusts 8 mph13 km/h	77%	60%	0
Sun 9p	Partly cloudy	53°12° (likely 52°11° to 54°12°)	53°12°	0%	2 mph3 km/h from S, gusts 9 mph14 km/h	83%	65%	0
Sun 10p	Partly cloudy	52°11° (likely 50°10° to 53°12°)	52°11°	0%	2 mph3 km/h from SSW, gusts 9 mph14 km/h	83%	45%	0
Sun 11p	Cloudy	50°10° (likely 48°9° to 52°11°)	50°10°	0%	2 mph3 km/h from SSW, gusts 9 mph14 km/h	86%	66%	0
Mon 12a	Partly cloudy	50°10° (likely 47°8° to 51°11°)	50°10°	0%	2 mph3 km/h from SSW, gusts 9 mph14 km/h	86%	62%	0
Mon 1a	Cloudy	49°9° (likely 47°8° to 50°10°)	49°9°	0%	2 mph3 km/h from SW, gusts 9 mph14 km/h	86%	74%	0
Mon 2a	Cloudy	48°9° (likely 46°8° to 50°10°)	48°9°	0%	2 mph3 km/h from SW, gusts 9 mph14 km/h	89%	69%	0
Mon 3a	Partly cloudy	47°8° (likely 46°8° to 49°9°)	47°8°	0%	2 mph3 km/h from SW, gusts 9 mph14 km/h	89%	39%	0
Mon 4a	Cloudy	47°8° (likely 45°7° to 49°9°)	47°8°	0%	2 mph3 km/h from SW, gusts 8 mph13 km/h	89%	78%	0
Mon 5a	Partly cloudy	46°8° (likely 45°7° to 48°9°)	46°8°	0%	2 mph3 km/h from WSW, gusts 8 mph13 km/h	93%	81%	0
Mon 6a	Cloudy	46°8° (likely 45°7° to 48°9°)	46°8°	0%	1 mph2 km/h from WSW, gusts 7 mph12 km/h	93%	76%	0
Mon 7a	Partly cloudy	45°7° (likely 44°7° to 47°8°)	45°7°	0%	1 mph2 km/h from W, gusts 5 mph8 km/h	93%	78%	0
Mon 8a	Partly sunny	44°7° (likely 43°6° to 47°8°)	44°7°	0%	1 mph2 km/h from W, gusts 5 mph7 km/h	96%	77%	0
Mon 9a	Sunny	46°8° (likely 44°7° to 49°9°)	46°8°	0%	2 mph3 km/h from W, gusts 6 mph9 km/h	100%	73%	0
Mon 10a	Mostly sunny	53°12° (likely 50°10° to 54°12°)	53°12°	0%	2 mph3 km/h from NW, gusts 8 mph13 km/h	86%	67%	1
Mon 11a	Cloudy	60°16° (likely 53°12° to 60°16°)	60°16°	0%	2 mph3 km/h from NNW, gusts 9 mph15 km/h	72%	69%	2
Mon 12p	Cloudy	64°18° (likely 56°13° to 64°18°)	64°18°	0%	2 mph3 km/h from NNW, gusts 8 mph12 km/h	65%	62%	3
Mon 1p	Cloudy	67°19° (likely 58°14° to 67°19°)	67°19°	0%	3 mph5 km/h from N, gusts 7 mph12 km/h	59%	56%	4
Mon 2p	Cloudy	68°20° (likely 60°16° to 68°20°)	68°20°	0%	3 mph5 km/h from N, gusts 7 mph11 km/h	57%	56%	4
Mon 3p	Mostly cloudy	68°20° (likely 62°17° to 68°20°)	68°20°	0%	5 mph8 km/h from N, gusts 7 mph12 km/h	57%	56%	3
Mon 4p	Mostly cloudy	68°20° (likely 62°17° to 68°20°)	68°20°	0%	5 mph8 km/h from N, gusts 8 mph13 km/h	57%	67%	2

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Fog. High 66°19°, low 41°5°. Typical 57°14° / 38°3°. Dry. Forecasts agree.
1. Evening
  6 PM–midnight
  Clear, 55°13°
  Dry
2. Overnight
  midnight–6 AM
  Clear, 43°6°
  Dry
Official NWS forecast
Today: Mostly sunny, with a high near 66. Southeast wind around 3 mph.
Tonight: Patchy fog after 1am. Partly cloudy. Low around 41, with temperatures rising to around 43 overnight. South southeast wind around 3 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
64°18°–66°19°
Low, likely
36°2°–41°5°
Typical high / low
57°14° / 38°3°
Wind
7 mph11 km/h, gusts 17 mph27 km/h
UV peak
4
Tomorrow, Oct 25. Fog. High 69°21°, low 44°7°. Typical 57°14° / 37°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Fog, 41°5°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 46°8°
  Dry
Official NWS forecast
Day: Patchy fog before 10am. Mostly sunny, with a high near 69. South wind 2 to 6 mph.
Night: Partly cloudy, with a low around 44. Southwest wind around 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
67°19°–69°21°
Low, likely
39°4°–44°7°
Typical high / low
57°14° / 37°3°
Wind
9 mph15 km/h, gusts 16 mph25 km/h
UV peak
4
Monday, Oct 26. Partly sunny. High 68°20°, low 41°5°. Typical 56°13° / 37°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Mostly cloudy, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 46°8°
  Dry
Official NWS forecast
Day: Mostly sunny, with a high near 68. West northwest wind 1 to 6 mph.
Night: Mostly cloudy, with a low around 41.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–68°20°
Low, likely
41°5°–47°8°
Typical high / low
56°13° / 37°3°
Wind
11 mph17 km/h, gusts 20 mph32 km/h
UV peak
4
Tuesday, Oct 27. Cloudy. High 62°17°, low 44°7°. Typical 56°13° / 37°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 60°15°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 50°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 62.
Night: Mostly cloudy, with a low around 44.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
58°14°–62°17°
Low, likely
42°6°–48°9°
Typical high / low
56°13° / 37°3°
Wind
10 mph16 km/h, gusts 20 mph32 km/h
UV peak
3
Wednesday, Oct 28. Cloudy. High 70°21°, low 51°11°. Typical 55°13° / 36°2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 49°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 55°13°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 70.
Night: Partly cloudy, with a low around 51.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
68°20°–71°22°
Low, likely
47°8°–51°11°
Typical high / low
55°13° / 36°2°
Wind
10 mph16 km/h, gusts 21 mph34 km/h
UV peak
3
Thursday, Oct 29. Partly sunny. High 73°23°, low 48°9°. Typical 55°13° / 36°2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 57°14°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 52°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers after 2pm. Mostly sunny, with a high near 73.
Night: A slight chance of rain showers before 8pm. Partly cloudy, with a low around 48.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
67°19°–73°23°
Low, likely
48°9°–56°13°
Typical high / low
55°13° / 36°2°
Wind
13 mph21 km/h, gusts 27 mph44 km/h
UV peak
3
Friday, Oct 30. Cloudy. High 72°22°, low 50°10°. Typical 54°12° / 36°2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 51°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 53°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 72.
Night: Partly cloudy, with a low around 50.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
60°16°–73°23°
Low, likely
45°7°–55°13°
Typical high / low
54°12° / 36°2°
Wind
12 mph19 km/h, gusts 22 mph36 km/h
UV peak
1
Saturday, Oct 31. Cloudy. High 69°21°, low 52°11°. Typical 54°12° / 36°2°. Rain 0.02 in0.5 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 71°22°
  20% chance
3. Evening
  6 PM–midnight
  Cloudy, 62°17°
  30% chance
4. Overnight
  midnight–6 AM
  Cloudy, 58°15°
  50% chance · 0.09 in2.2 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
60°16°–74°23°
Low, likely
44°7°–56°13°
Typical high / low
54°12° / 36°2°
Wind
12 mph19 km/h, gusts 24 mph39 km/h
UV peak
3
Sunday, Nov 1. Drizzle. High 66°19°, low 56°13°. Typical 54°12° / 35°2°. Rain 0.42 in11 mm, 50% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 56°14°
  50% chance · 0.19 in4.7 mm
2. Afternoon
  noon–6 PM
  Drizzle, 65°18°
  40% chance · 0.09 in2.3 mm
3. Evening
  6 PM–midnight
  Drizzle, 62°17°
  30% chance · 0.12 in3.1 mm
4. Overnight
  midnight–6 AM
  Showers, 57°14°
  30% chance · 0.16 in4.1 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
61°16°–69°21°
Low, likely
49°9°–61°16°
Typical high / low
54°12° / 35°2°
Wind
20 mph33 km/h, gusts 30 mph49 km/h
UV peak
2
Monday, Nov 2. Showers. High 63°17°, low 49°9°. Typical 53°12° / 35°2°. Rain 0.57 in14 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Showers, 56°13°
  30% chance · 0.13 in3.3 mm
2. Afternoon
  noon–6 PM
  Rain, 53°11°
  30% chance · 0.19 in4.8 mm
3. Evening
  6 PM–midnight
  Drizzle, 50°10°
  30% chance · 0.18 in4.4 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–65°18°
Low, likely
40°4°–57°14°
Typical high / low
53°12° / 35°2°
Wind
17 mph27 km/h, gusts 35 mph56 km/h

10 days15 days30 days

The outlook

Today
Dry, high 66°, low 41°.
Tomorrow
Dry, high 69°, low 44°, warming up.
Monday
Dry, high 68°, low 41°.
Rest of week
Highs 62–73°; chance of precipitation on Sunday.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (GRR) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Grand River at Jackson

11 mi

Below flood stage

Level: 9.1 ft
Flow: 77 cfs

Reading from Sat 3:30 PM · NWS gauge page

Mill Creek near Dexter

16 mi

Below flood stage

Level: 5.8 ft
Flow: 38 cfs

Reading from Sat 3:45 PM · NWS gauge page

Saline River below SALINE

24 mi

Level: 5.1 ft
Flow: 41 cfs

Reading from Sat 4 PM · NWS gauge page

Huron River at Ann Arbor

24 mi

Below flood stage

Level: 12.1 ft
Flow: 206 cfs

Reading from Sat 4:45 PM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 82% less heating than a typical week.

This week 23Typical 132

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 19
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at. About 2 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 46°F).

Open the windows?

Sun, 12:00 PM–7:00 PM

Good stretch to open the windows.

Is this typical?

Chelsea · official normals 1991–2020 · records 2001–2026

Oct 24, today vs a typical year

Today’s expected high is 9°5° warmer than typical.

Last 7 days vs normal

On average 2°1° warmer than normal (daily mean temperature).

−7°−4°SunOct 18
−1°MonOct 19
+4°+2°TueOct 20
+5°+3°WedOct 21
+6°+3°ThuOct 22
+6°+3°FriOct 23
+4°+2°SatOct 24

Grass Lake weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 41 min; Losing 2 min 39 s a day; shortest Dec 21, 1 h 35 min less
Golden hour: 6:02–6:58 PM; Morning 7:42–8:39 AM
Blue hour: 6:58–7:09 PM; Morning 7:31–7:42 AM; first light 7:31 AM

Stars tonight? Fair

Mostly clear 7:09 PM–5 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 6:12 AM · rises 5:39 PM
Full moon: Oct 26
New moon: Nov 9

Looking west from Grass Lake. A level horizon.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Grass Lake, MI weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Grand River at Jackson

Mill Creek near Dexter

Saline River below SALINE

Huron River at Ann Arbor

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Fair

Moon