Is it raining now in Tempe?
Sunny
9 JulNo upcoming precipitation for the next hour.
Last update: 18:00, 9 Jul 2026
Free to download * Essential from $0.83 * Prices vary by region and promotions.
- App Only
Track up to 20 locations
Home, office, kids' school - all at once, no switching tabs.
- App Only
Alerts for each of them
Get notified 15 minutes before rain - while you can still change your plans.
- App Only
Widgets on your home screen
Live radar without opening the app - on your lock screen or home screen.
Rain in Tempe: What You Need to Know
Tempe, Arizona experiences Sonoran and Chihuahuan desert with North American Monsoon July–September. The Tempe rain radar provides hyperlocal radar coverage updated every 4–6 minutes from KIWA (Chandler/Phoenix), showing exactly when and where precipitation will reach the area — a level of precision that city-wide forecasts cannot match. Rain in Tempe is shaped by sonoran and chihuahuan desert with north american monsoon july–september; near-zero infiltration means flash flooding from minimal rainfall.
RainViewer draws on live NEXRAD data from KIWA (Chandler/Phoenix) to show precipitation at up to 250-meter resolution across Tempe and surrounding Arizona communities. Storms typically approach from southeast from Gulf of California, and the live map shows the cell's movement vector — giving residents, commuters, and outdoor workers the advance notice they need before conditions change.
Rain by Season in Tempe
Peak rain season (July 15–September 30 (monsoon peak))
Tempe sees its most active weather during July 15–September 30 (monsoon peak). Sonoran and chihuahuan desert with north american monsoon july–september drives the primary precipitation risk during this window.
Transition months
Seasonal transitions bring variable conditions to Tempe — conditions can shift rapidly and forecast accuracy is lower than during the established wet or dry season.
Drier season (October–June)
During October–June, precipitation risk in Tempe drops significantly. This is the most reliable window for outdoor activities and events, though no season is entirely risk-free.
Why You Need a Rain Radar in Tempe
Tempe Flood-Zone Residents and Property Managers
Tempe's Tempe Town Lake on Salt River can rise rapidly during intense rain events. A live radar showing an intense cell approaching from southeast from Gulf of California gives residents and property managers 20–30 minutes to move vehicles, prepare drainage systems, and alert household members before conditions become dangerous.
Commuters and Highway Drivers in Tempe
Rain events in Tempe can close roads and create dangerous driving conditions with minimal warning. Checking the radar 20 minutes before departure reveals whether an incoming cell will clear before your route or whether a 30-minute delay will mean dry roads — a practical decision that saves time and reduces flood-crossing risk on Tempe's most weather-sensitive corridors.
Outdoor Recreation and Event Planning in Tempe
Tempe's outdoor venues, parks, and recreational areas are directly exposed to the afternoon convective storms that characterize Arizona's July 15–September 30 (monsoon peak) weather window. A live radar check 30–60 minutes ahead tells event managers and outdoor enthusiasts whether to proceed with outdoor plans or prepare for disruption.
RainViewer Radar Coverage in Tempe
RainViewer aggregates radar data for the United States from the NEXRAD network operated by NOAA's National Weather Service — 160 WSR-88D stations covering the contiguous US, Alaska, Hawaii, and US territories. Data updates every 4–6 minutes as each station completes its scan cycle. RainViewer processes and displays NEXRAD data at up to 250-meter resolution, preserving the raw scan data rather than smoothing it into regional averages. For Tempe, Arizona, the primary NEXRAD source is KIWA (Chandler/Phoenix), providing hyperlocal radar coverage across the area.
Tempe Rain Radar: Frequently Asked Questions
- Does Tempe flood when it rains heavily?
Yes — Tempe's Tempe Town Lake on Salt River creates documented flood risk during intense rain events. Sonoran and chihuahuan desert with north american monsoon july–september means that rainfall runs off rapidly into drainage channels and low-lying streets. Avoiding tempe crossings and low underpasses during active radar cells reduces flood risk significantly.
- When is Tempe's rainy season?
Tempe's primary rain season runs through July 15–September 30 (monsoon peak), when Sonoran and Chihuahuan desert with North American Monsoon July–September drives the most active weather. The driest period is typically October–June, when outdoor activities and travel planning carry the lowest weather risk.
- Why is rain in Tempe so hard to predict precisely?
Tempe's rain character is shaped by Sonoran and Chihuahuan desert with North American Monsoon July–September, which creates localized precipitation patterns that vary significantly across the city. A forecast covers the broader Arizona region; a hyperlocal radar at 250-meter resolution shows the actual cell position over Tempe in real time, updated every 4–6 minutes from KIWA (Chandler/Phoenix).
- Is there a live rain radar for Tempe?
Yes — RainViewer displays live NEXRAD data for Tempe at up to 250-meter resolution, updated every 4–6 minutes from KIWA (Chandler/Phoenix). The map shows current precipitation, storm movement direction, and a 2-hour nowcast — so you can see whether the cell approaching from southeast from Gulf of California will reach Tempe or change track before arrival.
Track Rain in Tempe in Real Time
Rain in Tempe changes fast — a live radar gives you the 20-minute window a forecast never can.
Forecasts cover the region. RainViewer shows the cell position over Tempe right now.
Your weather app shows rain likely near Tempe. RainViewer shows the cell's exact position.
Track rain in Tempe — free Upgrade to Essential for alerts, forecasts, and full radar history
2-hour forecast in 5-minute slices
see when rain will reach Tempe
Rain alerts before arrival
set an alert for your Tempe location
Direction arrows
storms approach Tempe from southeast from Gulf of California
48 hours of radar history
understand recent rain patterns in Tempe
Multiple locations
track Tempe alongside nearby towns simultaneously
RainViewer
