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United States weather

Weather in Allen County, Indiana for May 2026

Your guide to Allen County weather in May - trends and predictions

    Official Weather Alert ⚠️

  • Freeze Warning - See hour by hour.

    • Temperatures

  • The forecast for the next days in Allen County predicts temperatures to be around 15 °F, close to the historical average.

  • In general, the average temperature in Allen County at the beginning of May is 13.7 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 21.1 °F by the end of May.

    • Rain 🌧️

  • Allen County experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 181.9 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
7
Dry days
Average rainy days
24
Rainy days
Average snowy days
0
Snow days
Average temperatures
20°/10°
Temperatures
Average wind speed
20 km/h
Avg max wind
Average humidity
75 %
Avg humidity

Allen County Weather May

Move between months or click on a day
April
June
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Moderate rain at times
18°
2
Weather Alert Patchy rain possible
10°
3
Patchy rain possible
13°
4
Patchy rain possible
18°
5
Heavy rain
16°
6
Moderate rain
9°
7
Patchy rain possible
12°
8
Patchy rain possible
14°
9
Patchy rain possible
17°
10
Moderate rain
15°
11
Sunny
15°
12
Partly cloudy
15°
13
Patchy rain possible
24°
14
Patchy rain possible
20°
15
Sunny
18°
16
Overcast
24°
17
Sunny
21°
18
Sunny
21°
19
Moderate or heavy rain shower
23°
20
Overcast
18°
21
Partly cloudy
21°
22
Sunny
20°
23
Partly cloudy
22°
24
Patchy rain possible
23°
25
Overcast
20°
26
Sunny
22°
27
Partly cloudy
19°
28
Partly cloudy
20°
29
Partly cloudy
22°
30
Partly cloudy
21°
31
Partly cloudy
24°

Temperatures trend during May in Allen County

See the weather trend as well as the moving average line

May weather in Allen County day by day

Click on a date for more information
April June
Date Weather Temperatures Rain UV More
May 1 Moderate rain at times
Moderate rain at times
 18° /8° 22.8 mm 4
May 2 Patchy rain possible
Patchy rain possible
 10° /0° 0.3 mm 5.1
May 3 Patchy rain possible
Patchy rain possible
 13° /2° 0.8 mm 5.2
May 4 Patchy rain possible
Patchy rain possible
 18° /9° 4.4 mm 2.9
May 5 Heavy rain
Heavy rain
 16° /8° 31.5 mm 1.2
May 6 Moderate rain
Moderate rain
 9° /6° 9.4 mm 0.2
May 7 Patchy rain possible
Patchy rain possible
 12° /5° 0.6 mm 2
May 8 Patchy rain possible
Patchy rain possible
 14° /5° 0.7 mm 2
May 9 Patchy rain possible
Patchy rain possible
 17° /3° 0.3 mm 3
May 10 Moderate rain
Moderate rain
 15° /6° 7.7 mm 3
May 11 Sunny
Sunny
 15° /5° 0 mm 3
May 12 Partly cloudy
Partly cloudy
 15° /6° 0 mm 4
May 13 Patchy rain possible
Patchy rain possible
 24° /12° 0.3 mm 4
May 14 Patchy rain possible
Patchy rain possible
 20° /13° 1.1 mm 4
May 15 Sunny
Sunny
 18° /9° 0 mm 4
May 16 Overcast
Overcast
 24° /13° 0.6 mm 6
May 17 Sunny
Sunny
 21° /11° 6.4 mm 5
May 18 Sunny
Sunny
 21° /9° 5.5 mm 5
May 19 Moderate or heavy rain shower
Moderate or heavy rain shower
 23° /12° 3.7 mm 5
May 20 Overcast
Overcast
 18° /11° 33.7 mm 4
May 21 Partly cloudy
Partly cloudy
 21° /11° 1.8 mm 5
May 22 Sunny
Sunny
 20° /11° 4.1 mm 5
May 23 Partly cloudy
Partly cloudy
 22° /9° 0 mm 6
May 24 Patchy rain possible
Patchy rain possible
 23° /9° 0.9 mm 5
May 25 Overcast
Overcast
 20° /8° 0.7 mm 4
May 26 Sunny
Sunny
 22° /8° 11.1 mm 5
May 27 Partly cloudy
Partly cloudy
 19° /10° 3.7 mm 4
May 28 Partly cloudy
Partly cloudy
 20° /11° 0.2 mm 5
May 29 Partly cloudy
Partly cloudy
 22° /11° 0.4 mm 5
May 30 Partly cloudy
Partly cloudy
 21° /10° 0.5 mm 5
May 31 Partly cloudy
Partly cloudy
 24° /11° 0.6 mm 6
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Important Notice
Our weather forecast for Allen County in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Allen County forecast closer to your planned date for the most up-to-date weather information.
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Allen County in May - FAQ

What are the expected maximum and minimum temperatures in Allen County during May?

Enjoy moderate daytime temperatures of up to 20° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Allen County during May?

Significant rainfall exceeding 181.9 mm is expected in Allen County during May, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Allen County during May?

The average wind speed in Allen County during May is 20 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in Allen County

Explore the daily rainfall trends and prepare for Allen Countys May weather 💧
Typically, Allen County has 24 rainy days in May with a total of 181.9 mm of rainfall.

UV exposure in Allen County during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
Top locations in Allen County
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Fort Wayne
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Location coordinates Where is Allen County?

Get accurate weather forecasts for Allen County, located at latitude 41.131 and longitude -85.129. Stay updated with localized weather information tailored for Allen County.

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