What a soggy and wet weekend we just had. Salem has picked up nearly two inches of rain between Friday and Sunday, and actually Salem set a new rainfall record back on Saturday for the most rain recorded on that date with a full inch falling just on that day alone.
My previous forecast for Monday and Tuesday remain on track with Monday standing the best chance for thundershowers and big downpours, and Tuesday standing the best chance for some dry weather. We dry out and warm up for the remainder of the week. More on that at the end of this post.
April 2024
April 2024 was a drier month, but with almost perfectly average temperatures. Nothing really exciting happened. We had our usual brief downpours of heavy rain and in some instances – hail, but that is to be expected, and it was far less than we have seen in past Aprils. In the end we had just 60% of our average total precipitation for the month. For temperatures, we ended -0.1° cooler than average, so basically right on the dot. Salem did have a late season freeze on April 17th the official airport temperature reading recorded a low of 32°. Our warmest temp of the month was a high of 75 degrees which took place both on April 2nd and April 23rd.
Thunderstorm info and look ahead
Things to watch for in the coming months include thunderstorm threats, heatwaves, the annual end of our spring showers and storms, and the beginning of our extremely stable warm and dry summertime pattern.
I do have a fun thunderstorm chart for you all which is curtesy of Mark Nelson over at Fox 12 Oregon. It’s true we don’t see very many thunderstorms in the Willamette Valley, and when we do experience them it’s often times a quick rumble or two and nothing more. Despite that, we do have a thunderstorm season here, and this chart below illustrates those seasons (circled on here) by showing the percentage of years lighting was observed in Multnomah County for any given hour of the year per week. For example, 7% of the years analyzed had lighting in Multnomah County during the 9pm hour in the first week of February. Check it out and click for a larger view.

As you can see, there are two distinct thunderstorm seasons here – albeit not very impressive seasons when compared to say Arizona or Florida. Nonetheless, we are currently in our peak thunderstorm season, and will be through most of June.
A second thing which caught my eye is the slight uptick in lightning occurrences during the overnight hours in summer. Salem’s best shot at nighttime lightning goes from roughly July 1st through the first week of September and you can see that represented on the chart.
I’m definitely curious and a little excited (as always) to see how much – if any thunderstorm action we get over the rest of this spring and summer season. Right now we have a shot at some brief thundershower action Monday, and maybe Tuesday before drying out and warming up with no rain or thunderstorm threats afterwards for at least several days. I’ve upped our high temperatures for Friday and Saturday with daytime temps reaching 83 to 85°. Highs on Sunday should still be back into the low 80s. The dry weather should dominate most of next week as well, but if any rain threats pop up I should have adequate time to inform you all.
Have a great Monday, stay safe, and keep an eye out for any lightning you might be lucky enough to spot. 🙂




