Increasing Humidity this Weekend

Our stretch of warm weather has begun in eastern Iowa. Today is one of the “cooler” days. Highs reach the low 80s to near 90° this afternoon. Humidity stays on the low side today, keeping things comfortably warm. A few showers and storms track through this afternoon into the early evening (severe weather risk is low). Not everyone sees rain today and some will only see sunshine on this Friday.

Tonight, as the temperatures fall, we feel a little more of the moisture in the air. If you’re planning a campfire, bring the water and a light blanket as overnight lows fall into the mid-60s.

Humidity slightly increases again during the day Saturday. Temperatures rocket into the 90s for most of the area tomorrow. The combination of heat and humidity brings the concept of heat index – how warm it feels outside.

Heat indices near 100° not only for Saturday afternoon but also on Sunday, as well.

Strong winds pick up on Saturday and continue into mid-week.


Posted under Forecast Discussion, Heat, Records, Temperatures

This post was written by Rachael Peart on June 9, 2017

Rivaling Record Highs and Severe Storms Possible

After storms Monday evening, most of Tuesday will be pretty quiet. Partly to mostly cloudy conditions cover our skies. A front to our west will track very slowly to our area and that is why we keep cloud cover around. However, with us on the west side of the front, we’ll see strong southerly winds. Winds pull in more warm air and temperatures soar into the 80s and possibly low 90s (mainly along/south of I-80). Humid conditions will make it feel even warmer (hello heat index!).

Overnight, as the front tracks closer, we have the chance for showers and storms. Storms track through between 10pm and 2am Wednesday morning. Damaging straight line winds are the greatest threat, followed by hail and isolated tornadoes.

Scattered storms continue on Wednesday, some of which could be strong or severe. SPC issued a slight risk for all of eastern Iowa on Wednesday.

Check back for updates.


Posted under Forecast Discussion, Records, Severe Weather, Temperatures

This post was written by Rachael Peart on May 16, 2017

Record Lows Broken Wednesday Morning

On Wednesday morning, both Cedar Rapids and Waterloo approached record low temperatures. Waterloo broke the 92 year record by 6 degrees, while Cedar Rapids broke its record by 1 degree.


Warmer air moves in for the rest of the week.


Posted under Records, Temperatures

This post was written by Rachael Peart on March 15, 2017

Record Cold Tonight

Record or near record low temperatures are expected by morning. The sky is clear tonight with a gentle breeze from the northwest. Wednesday is cold again with highs in the 20s under a mostly sunny sky. The wind switches from a light northwest wind to southwest wind. Clouds increase Wednesday night with low temperatures not as cold (teens).

Thursday and Friday will have a lot of clouds around. A slight chance of a rain/snow shower is possible Thursday and a rain shower Friday. High temperatures warm into the low-mid 40s both days. The wind is breezy from the southeast Thursday and from the northwest Friday.

The weekend temperatures are near or slightly above normal with a partly to mostly cloudy sky.


Posted under Records, Temperatures

This post was written by Schnack on March 14, 2017

Record Warm February in Waterloo

Here is what the ranking looks like compared the record warmest month.

The chart below shows the high and low temperatures for each day in February.


Posted under Climate, Records, Temperatures

This post was written by Schnack on March 1, 2017

From “Summer” Back to Winter in 48 Hours

Not only did we break the record highs on Wednesday, we shattered them! Records were in the low to mid 60s and we ended the day in the upper 60s to mid 70s!

I hope that you enjoyed it, because Winter is tracking back in.  A strong low pressure system will track from Kansas through southeastern Iowa over the next 24 to 36 hours. This will bring a lot of wind along with a return to winter weather. Much of the viewing area will start off with rain, and even a few thunderstorms, later today into the evening hours.

The far northern counties could see snow taking over before Midnight. Heavy snow is possible there with areas to the south seeing a mix or just plain rain through the nighttime hours.

There is a VERY sharp cutoff between the snow and the rain.  Plus, the ground is pretty warm, so much of the early snow will melt. Having said that, if the snow falls very fast, it will be able to turn into a slushy mess.

As the system tracks to the northeast, more cold air will change all the precipitation to snow by tomorrow afternoon and evening.

Snow and snow showers will continue Friday night into early Saturday morning before we dry out.

Oh… and we will have a lot of wind!  Winds will gust to 30 mph today and up to 45 mph at times tonight with gusts to 30 mph tomorrow.  Any snow will be blown around quite easily and will help to reduce visibilities… no matter how wet and heavy the snow is.

Since this storm is still in Kansas, there is plenty of opportunity for it to change its track. And even a 50 mile shift in that track will change how much snow we end up with. Another problem with pinning down snowfall amounts… the ground is warm, so there will be melting at first, which decreases amounts. There is the possibility of thundersnow, which would increase snowfall amounts. Essentially, this forecast will likely change over the next several hours… and maybe through the entire event… but here is a general idea of how it looks right now.

This forecast will change as the fine details become more clear. Stay tuned to the latest forecast and download the Storm Track 7 app on your mobile device.



Posted under Records, Windy, Winter Weather

This post was written by Eileen Loan on February 23, 2017

Record highs to snow chances

Today felt more like May than February. Daily record high temperatures were broken easily. At the same time all-time February record highs were broken.

Tonight: Increasing clouds late and cooler with lows in the upper 30s.

Thursday: Cloudy and cooler yet still above average again…just not 60s and 70s. Highs range from 45 north to 54 south. Rain moves into eastern Iowa during the afternoon.

Thursday Night: Far northern Iowa expect a wintry mix (rain/snow/freezing rain) with temperatures in the low 30s. It is warmer south with rain/thunderstorms. The wind increases from the northeast at 15-30 mph.

Friday: Rain chances continue through the day. A few hours of the day might actually turn sunny before clouding over again. Far northern Iowa rain mixes with snow in the afternoon.

Saturday: Light snow continues into the morning before tapering off by noon. A strong northwest wind, with gusts to 35 mph, continues to pull in cold air. High temperatures will be in the 20s and 30s across the area, with colder wind chills.

Sunday: Light snow showers are possible throughout the day with high temperatures in the 30s, and a SW wind 10-15 mph.



Posted under Forecast Discussion, Records, Temperatures, Winter Weather

This post was written by Schnack on February 22, 2017

Record Watch Continues Through Wednesday

Dry and unseasonably mild weather returns for the next couple of days before BIG changes later this week. Highs today and tomorrow near (and possibly pass) record high temperatures across the board. The combination of sunny skies and southwesterly winds propel us to the low 60s in the north and upper 60s farther south.

Fog is possible again tonight, with lows into the 40s for most of the area. Wednesday turns out quite similarly to today with one minor difference…a few degrees warmer. Highs tomorrow reach the mid-60s to low 70s. A cold front Wednesday into Thursday begins to drag us back to reality. By Thursday, we only warm to the mid-40s. A few showers track in during the afternoon on Thursday.

Light snow mixes in with rain on Friday with much stronger winds. Light snow is possible Saturday morning and again briefly on Sunday.


Posted under Records

This post was written by Rachael Peart on February 21, 2017

Record Highs Broken Today

Cedar Rapids broke a 36 year record of 60° set in 1981. Iowa City broke a 33 year record high of 63° set 1983. Moline broke an 87 year record of 65° set in 1930.

Tomorrow will be another potentially record breaking day across eastern Iowa with plenty of sunshine and southerly winds.


Posted under Records

This post was written by Rachael Peart on February 20, 2017

TRACKING: Warm Monday with Rain & Storm Chances/Winter’s Return

We’ve got quite a bit of different weather coming at us in the next seven days.  First off, I hope you were able to enjoy the record-breaking temperatures this weekend.  Here are the record highs from Sunday.

Tonight, clouds increase ahead of our next storm system.  Patchy areas of fog are possible with lows dropping into the upper 40s and lower 50s, with a SE wind 5-15 mph.

Moisture increases across the region on Monday, leading to off and on showers and even a few thunderstorms during the day, as the center of the storm system tracks to the north.  Highs will still be warm in the upper 50s to middle 60s (records in jeopardy once again).  Winds will be S 10-20 mph.  Generally 0.25″ to 0.50″ of rain out of this system.  We will watch area rivers and streams for rises due to runoff.

Tuesday and Wednesday will be nice days, with once again record-breaking high temperature potential.



Feb. Waterloo Dubuque Cedar Rapids Iowa City
21 65 (1930) 63 (1930) 68 (1930) 69 (1930)
22 61 (1984) 61 (1985) 64 (1984) 63 (1922)

We begin cooling down on Thursday, with a chance for rain in the afternoon.  This is part of a strong storm system that will track very close to eastern Iowa, bringing a lot of wind, rain, wintry mix, and snow as we head late Thursday night into Friday.  This will bring cooler temperatures back to the region next weekend.

Still too early for details, but stay with KWWL Storm Track 7 for updates.


Posted under Forecast Discussion, Records, Temperatures

This post was written by Kyle Kiel on February 19, 2017