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United States weather

Weather in Umatilla County, Oregon for April 2026

Your guide to Umatilla County weather in April - trends and predictions

    Temperatures

  • Until now, April 2026 in Umatilla County has been nearly identical to the historical average, with a temperature of 16.3 °F (showing only a slight deviation of 0.1 °F).

  • The forecast for the coming days of April 2026 predicts a temperature of 21.5 °F , which is warmer than usual.

  • In general, the average temperature in Umatilla County at the beginning of April is 16.1 °F. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 18.7 °F by the end of April.

    • Rain 🌧️

  • Umatilla County experiences moderate rainfall in April, with an average of 6 rainy days and a total precipitation of 20.9 mm.

    • More

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

Average dry days
24
Dry days
Average rainy days
6
Rainy days
Average snowy days
0
Snow days
Average temperatures
17°/4°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
64 %
Avg humidity

Umatilla County Weather April

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

Temperatures trend during April in Umatilla County

See the weather trend as well as the moving average line

April weather in Umatilla County day by day

Click on a date for more information
March May
Date Weather Temperatures Rain UV More
Apr. 1 Patchy rain possible
Patchy rain possible
 12° /2° 9.1 mm 2
Apr. 2 Cloudy
Cloudy
 10° /1° 0 mm 3
Apr. 3 Patchy rain possible
Patchy rain possible
 14° /1° 0.2 mm 4
Apr. 4 Sunny
Sunny
 17° /2° 0 mm 4
Apr. 5 Cloudy
Cloudy
 21° /4° 0 mm 4
Apr. 6 Overcast
Overcast
 23° /7° 0 mm 5
Apr. 7 Moderate or heavy rain shower
Moderate or heavy rain shower
 16° /7° 7.2 mm 5
Apr. 8 Moderate or heavy rain shower
Moderate or heavy rain shower
 17° /3° 2.1 mm 5
Apr. 9 Patchy rain possible
Patchy rain possible
 17° /5° 0.2 mm 4
Apr. 10 Overcast
Overcast
 19° /6° 0 mm 4
Apr. 11 Overcast
Overcast
 15° /8° 1.6 mm 3
Apr. 12 Cloudy
Cloudy
 12° /6° 2.8 mm 3
Apr. 13 Partly cloudy
Partly cloudy
 15° /3° 15.4 mm 5
Apr. 14 Sunny
Sunny
 16° /2° 0 mm 4
Apr. 15 Partly cloudy
Partly cloudy
 16° /3° 6.8 mm 5
Apr. 16 Partly cloudy
Partly cloudy
 15° /3° 0 mm 5
Apr. 17 Sunny
Sunny
 14° /2° 0 mm 5
Apr. 18 Sunny
Sunny
 19° /1° 0 mm 5
Apr. 19 Moderate rain at times
Moderate rain at times
 21° /7° 0.6 mm 5
Apr. 20 Cloudy
Cloudy
 19° /6° 0 mm 5
Apr. 21 Partly cloudy
Partly cloudy
 17° /7° 2 mm 5
Apr. 22 Sunny
Sunny
 12° /4° 6.2 mm 3
Apr. 23 Sunny
Sunny
 16° /3° 0.8 mm 4
Apr. 24 Sunny
Sunny
 17° /3° 0 mm 6
Apr. 25 Overcast
Overcast
 19° /3° 0 mm 6
Apr. 26 Sunny
Sunny
 20° /1° 0 mm 5.7
Apr. 27 Patchy rain possible
Patchy rain possible
 18° /5° 0.7 mm 6
Apr. 28 Partly cloudy
Partly cloudy
 17° /5° 0 mm 5.8
Apr. 29 Sunny
Sunny
 18° /5° 0 mm 7.2
Apr. 30 Sunny
Sunny
 22° /7° 0 mm 0
Next
Important Notice
Our weather forecast for Umatilla County in April 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 Umatilla County forecast closer to your planned date for the most up-to-date weather information.
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Umatilla County in April - FAQ

What are the expected maximum and minimum temperatures in Umatilla County during April?

During April, expect a variety of temperatures with highs around 17° and lows near 4°, suitable for diverse activities and preferences.

How much rainfall should be expected in Umatilla County during April?

In April, Umatilla County can expect light to moderate rainfall, totaling 20.9 mm across approximately 6 days. Occasional showers are possible, and planning ahead for them could be helpful.

What are the typical wind conditions in Umatilla County during April?

The average wind speed in Umatilla County during April is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

April rainfall patterns in Umatilla County

Explore the daily rainfall trends and prepare for Umatilla Countys April weather 💧
Typically, Umatilla County has 6 rainy days in April with a total of 20.9 mm of rainfall.

UV exposure in Umatilla County during April

Stay informed about UV levels for safe outdoor activities throughout the month of April ☀️
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Location coordinates Where is Umatilla County?

Get accurate weather forecasts for Umatilla County, located at latitude 45.672 and longitude -118.789. Stay updated with localized weather information tailored for Umatilla County.

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