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Best time to visit Ann Arbor

Monthly weather scores combine temperatures, sunshine, rain, and comfort signals to highlight when Ann Arboris at its most inviting, and when the weather is least cooperative.

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Best overall month

September

Overall score 47.7%

High
75.0°F
Low
57.0°F
Sun
6.4h
Rain
0.1in
Rain days
29.0%
Humidity
74.1%
Wind
10.9mph
Day length
12.5h
Sun percent
51.4%
Month to omit

January

Overall score 15.3%

High
30.6°F
Low
19.9°F
Sun
1.2h
Rain
0.1in
Rain days
28.0%
Humidity
81.2%
Wind
13.7mph
Day length
9.5h
Sun percent
12.6%

Overall travel weather

A simple average of the Heat Seeker, Mild Moderate, and Sun And Dry scores.

The tables below rank months by score. Each month includes the long-term weather inputs behind the score: daytime and nighttime temperature, sunshine, rain, rainy-day share, humidity, wind, day length, and the score components for this travel style.

Monthly score trend

This chart shows how the score changes through the year, so the top and omitted months below have context.

Top months to visit

Higher scores mean months that better match this travel style.

1. September

Score 47.7%

#1
High
75.0°F
Low
57.0°F
Sun
6.4h
Rain
0.1in
Rain days
29.0%
Humidity
74.1%
Wind
10.9mph
Day length
12.5h
Sun percent
51.4%
Heat score
42.0%
Mild score
52.0%
Dry score
49.0%

2. June

Score 41.0%

#2
High
77.2°F
Low
59.4°F
Sun
7.1h
Rain
0.2in
Rain days
39.0%
Humidity
74.9%
Wind
11.8mph
Day length
15.2h
Sun percent
46.6%
Heat score
42.0%
Mild score
32.0%
Dry score
49.0%

3. August

Score 39.7%

#3
High
79.7°F
Low
62.4°F
Sun
6.8h
Rain
0.1in
Rain days
32.0%
Humidity
75.4%
Wind
10.1mph
Day length
13.8h
Sun percent
49.2%
Heat score
49.0%
Mild score
19.0%
Dry score
51.0%

Top months to omit

Lower scores mean months where the weather is least aligned with this travel style.

1. January

Score 15.3%

#1
High
30.6°F
Low
19.9°F
Sun
1.2h
Rain
0.1in
Rain days
28.0%
Humidity
81.2%
Wind
13.7mph
Day length
9.5h
Sun percent
12.6%
Heat score
10.0%
Mild score
11.0%
Dry score
25.0%

2. February

Score 16.3%

#2
High
35.1°F
Low
21.9°F
Sun
2.0h
Rain
0.1in
Rain days
30.0%
Humidity
81.3%
Wind
14.0mph
Day length
10.6h
Sun percent
18.9%
Heat score
11.0%
Mild score
10.0%
Dry score
28.0%

3. December

Score 18.0%

#3
High
37.0°F
Low
27.3°F
Sun
2.1h
Rain
0.1in
Rain days
26.0%
Humidity
79.5%
Wind
13.6mph
Day length
9.2h
Sun percent
23.0%
Heat score
13.0%
Mild score
12.0%
Dry score
29.0%

Heat Seeker

Heat Seeker Score is a composite score designed for those who crave hot, sunny weather with minimal rainfall. It prioritizes high temperatures and abundant sunshine.

The tables below rank months by score. Each month includes the long-term weather inputs behind the score: daytime and nighttime temperature, sunshine, rain, rainy-day share, humidity, wind, day length, and the score components for this travel style.

Monthly score trend

This chart shows how the score changes through the year, so the top and omitted months below have context.

Top months to visit

Higher scores mean months that better match this travel style.

1. July

Score 50.0%

#1
High
81.3°F
Low
64.2°F
Sun
6.9h
Rain
0.2in
Rain days
39.0%
Humidity
76.3%
Wind
10.1mph
Day length
14.9h
Sun percent
46.3%
Heat high
49.0%
Heat low
100.0%
Heat sun
46.0%
Heat rain
22.0%

2. August

Score 49.0%

#2
High
79.7°F
Low
62.4°F
Sun
6.8h
Rain
0.1in
Rain days
32.0%
Humidity
75.4%
Wind
10.1mph
Day length
13.8h
Sun percent
49.2%
Heat high
43.0%
Heat low
100.0%
Heat sun
49.0%
Heat rain
36.0%

3. June

Score 42.0%

#3
High
77.2°F
Low
59.4°F
Sun
7.1h
Rain
0.2in
Rain days
39.0%
Humidity
74.9%
Wind
11.8mph
Day length
15.2h
Sun percent
46.6%
Heat high
34.0%
Heat low
100.0%
Heat sun
47.0%
Heat rain
22.0%

Top months to omit

Lower scores mean months where the weather is least aligned with this travel style.

1. January

Score 10.0%

#1
High
30.6°F
Low
19.9°F
Sun
1.2h
Rain
0.1in
Rain days
28.0%
Humidity
81.2%
Wind
13.7mph
Day length
9.5h
Sun percent
12.6%
Heat high
0.0%
Heat low
0.0%
Heat sun
13.0%
Heat rain
44.0%

2. February

Score 11.0%

#2
High
35.1°F
Low
21.9°F
Sun
2.0h
Rain
0.1in
Rain days
30.0%
Humidity
81.3%
Wind
14.0mph
Day length
10.6h
Sun percent
18.9%
Heat high
0.0%
Heat low
0.0%
Heat sun
19.0%
Heat rain
40.0%

3. December

Score 13.0%

#3
High
37.0°F
Low
27.3°F
Sun
2.1h
Rain
0.1in
Rain days
26.0%
Humidity
79.5%
Wind
13.6mph
Day length
9.2h
Sun percent
23.0%
Heat high
0.0%
Heat low
0.0%
Heat sun
23.0%
Heat rain
48.0%

Mild Moderate

Mild Moderate Score is designed for those who prefer comfortable, temperate weather conditions. It favors moderate temperatures and balanced weather patterns.

The tables below rank months by score. Each month includes the long-term weather inputs behind the score: daytime and nighttime temperature, sunshine, rain, rainy-day share, humidity, wind, day length, and the score components for this travel style.

Monthly score trend

This chart shows how the score changes through the year, so the top and omitted months below have context.

Top months to visit

Higher scores mean months that better match this travel style.

1. May

Score 61.0%

#1
High
66.7°F
Low
49.5°F
Sun
4.8h
Rain
0.1in
Rain days
44.0%
Humidity
74.9%
Wind
12.6mph
Day length
14.6h
Sun percent
32.9%
Mild high
88.0%
Mild low
54.0%
Mild sun
26.0%
Mild rain
36.0%

2. September

Score 52.0%

#2
High
75.0°F
Low
57.0°F
Sun
6.4h
Rain
0.1in
Rain days
29.0%
Humidity
74.1%
Wind
10.9mph
Day length
12.5h
Sun percent
51.4%
Mild high
35.0%
Mild low
62.0%
Mild sun
63.0%
Mild rain
69.0%

3. October

Score 34.0%

#3
High
61.7°F
Low
45.7°F
Sun
4.2h
Rain
0.1in
Rain days
35.0%
Humidity
72.1%
Wind
12.9mph
Day length
11.0h
Sun percent
38.0%
Mild high
42.0%
Mild low
12.0%
Mild sun
36.0%
Mild rain
56.0%

Top months to omit

Lower scores mean months where the weather is least aligned with this travel style.

1. April

Score 7.0%

#1
High
56.1°F
Low
39.4°F
Sun
3.6h
Rain
0.2in
Rain days
44.0%
Humidity
73.3%
Wind
14.6mph
Day length
13.4h
Sun percent
26.9%
Mild high
0.0%
Mild low
0.0%
Mild sun
14.0%
Mild rain
36.0%

2. February

Score 10.0%

#2
High
35.1°F
Low
21.9°F
Sun
2.0h
Rain
0.1in
Rain days
30.0%
Humidity
81.3%
Wind
14.0mph
Day length
10.6h
Sun percent
18.9%
Mild high
0.0%
Mild low
0.0%
Mild sun
0.0%
Mild rain
67.0%

3. January

Score 11.0%

#3
High
30.6°F
Low
19.9°F
Sun
1.2h
Rain
0.1in
Rain days
28.0%
Humidity
81.2%
Wind
13.7mph
Day length
9.5h
Sun percent
12.6%
Mild high
0.0%
Mild low
0.0%
Mild sun
0.0%
Mild rain
71.0%

Sun And Dry

Sun And Dry Score maximizes sun exposure and minimizes all forms of precipitation. Temperature is secondary, preferring mild-to-warm conditions.

The tables below rank months by score. Each month includes the long-term weather inputs behind the score: daytime and nighttime temperature, sunshine, rain, rainy-day share, humidity, wind, day length, and the score components for this travel style.

Monthly score trend

This chart shows how the score changes through the year, so the top and omitted months below have context.

Top months to visit

Higher scores mean months that better match this travel style.

1. July

Score 51.0%

#1
High
81.3°F
Low
64.2°F
Sun
6.9h
Rain
0.2in
Rain days
39.0%
Humidity
76.3%
Wind
10.1mph
Day length
14.9h
Sun percent
46.3%
Dry sun
46.0%
Dry days
0.0%
Dry rain
100.0%
Dry comfort
83.0%

2. August

Score 51.0%

#2
High
79.7°F
Low
62.4°F
Sun
6.8h
Rain
0.1in
Rain days
32.0%
Humidity
75.4%
Wind
10.1mph
Day length
13.8h
Sun percent
49.2%
Dry sun
49.0%
Dry days
0.0%
Dry rain
100.0%
Dry comfort
77.0%

3. June

Score 49.0%

#3
High
77.2°F
Low
59.4°F
Sun
7.1h
Rain
0.2in
Rain days
39.0%
Humidity
74.9%
Wind
11.8mph
Day length
15.2h
Sun percent
46.6%
Dry sun
47.0%
Dry days
0.0%
Dry rain
100.0%
Dry comfort
67.0%

Top months to omit

Lower scores mean months where the weather is least aligned with this travel style.

1. January

Score 25.0%

#1
High
30.6°F
Low
19.9°F
Sun
1.2h
Rain
0.1in
Rain days
28.0%
Humidity
81.2%
Wind
13.7mph
Day length
9.5h
Sun percent
12.6%
Dry sun
13.0%
Dry days
0.0%
Dry rain
100.0%
Dry comfort
0.0%

2. February

Score 28.0%

#2
High
35.1°F
Low
21.9°F
Sun
2.0h
Rain
0.1in
Rain days
30.0%
Humidity
81.3%
Wind
14.0mph
Day length
10.6h
Sun percent
18.9%
Dry sun
19.0%
Dry days
0.0%
Dry rain
100.0%
Dry comfort
0.0%

3. December

Score 29.0%

#3
High
37.0°F
Low
27.3°F
Sun
2.1h
Rain
0.1in
Rain days
26.0%
Humidity
79.5%
Wind
13.6mph
Day length
9.2h
Sun percent
23.0%
Dry sun
23.0%
Dry days
0.0%
Dry rain
100.0%
Dry comfort
0.0%
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