AcuRite Replacement Wind Cups: Which Ones Fit and How to Replace Them

Cracked, chewed or blown off in a storm: wind cups are the part of a weather sensor that takes the most beating, and with AcuRite you can usually replace just that part instead of the whole station. The catch is that each AcuRite sensor line has its own wind cups, and sometimes the real problem is not the cups at all. This page helps you check both before you order.

Editorial Research

Written by

Lena Thornton, Weather Station Analyst & CWOP Contributor

Based on

AcuRite's compatibility charts, AcuRite product pages for the Iris and Notos wind cups and the Iris wind cup assembly, the AcuRite instruction manuals for the 5-in-1 wind cups (11145-5N1WC) and the 5-in-1 bearing kit (5N1WCBSA), and AcuRite support articles on inaccurate wind readings. We did not test these parts ourselves.

Research last verified

October 19, 2026

Which AcuRite Wind Cups Fit Your Sensor?

AcuRite makes different wind cups for each sensor line, and they are not interchangeable. Its compatibility charts list these:

Sources: AcuRite compatibility charts and AcuRite product pages, checked October 19, 2026. Not sure which sensor you have? The model number is printed on the bottom of the Iris sensor; our AcuRite replacement sensor guide shows how to match it.

Is It Really the Wind Cups?

Before you order, match what you see with what AcuRite says it means:

Sources: AcuRite support, "Iris (5-in-1) Inaccurate Wind Readings" and "Atlas (7-in-1) Inaccurate Wind Speed"; AcuRite product page and manual for the Iris wind cup assembly.

The lubricating routine AcuRite gives for the Iris: remove the screw below the wind cups, spray a small amount of lubricant into the hole, turn the sensor upside down and back a few times, and put the screw back. No screw on your model? Remove the wind cups if you can and put the lubricant directly on the spindle underneath. If the wind speed still reads zero after that, start with the reset in our Iris troubleshooting guide.

How to Replace the Iris (5-in-1) Wind Cups

These are the three steps from AcuRite's instruction manual for the 5-in-1 sensor wind cups (model 11145-5N1WC):

1. Pull the old cups off. Put your fingers between the wind cups and pull the base of the cup assembly away from the sensor, while you hold the sensor with your other hand. AcuRite's tip: hold the sensor close to your body for more pulling strength. Careful: broken edges can be sharp.
2. Line up the new cups. Line up the mounting hole of the new cups with the spindle on the sensor. AcuRite suggests one drop of light machine oil or spray lubricant on the spindle, so the anemometer spins freely.
3. Press them on. Push the cups onto the spindle and apply pressure until they are properly secured.

For the Notos and Atlas cups, follow the instructions that come with the part.

This video shows a wind cup swap on an AcuRite sensor:

Video: Levi Asay on YouTube. Not an official AcuRite video: when in doubt, follow the AcuRite manual.

When You Need the Wind Cup Assembly Instead

AcuRite's bearing kit manual is clear about when this applies: no wind speed readings, or lower wind speed than expected, while the sensor is mounted properly. Then the bearings of the anemometer may be worn. The Iris wind cup assembly (12123-5N1WCBSA) replaces the cups and the bearings together. It is a bigger job than the cups, so here is what the manual says to expect:

• You need to take the sensor down from its mount, and a Phillips screwdriver. The manual also says to remove the batteries from the sensor while you handle it, to avoid false rain or wind readings.
• Remove four long screws to separate the upper white part from the lower gray part, then four short screws near the fan.
• Take out the old wind speed and solar assembly, put the new one in, and put all screws back (the short ones hand-tight).

AcuRite reminds you that the electronics inside are sensitive, so handle the parts with care. Follow the full steps in the manual that comes with the kit.

AcuRite Wind Cups FAQ

Update Log

• October 19, 2026: Page rewritten. Compatibility checked against AcuRite's compatibility charts and product pages; replacement steps from AcuRite's manuals for the 5-in-1 wind cups and the 5-in-1 bearing kit. Removed earlier general text and unsourced quotes.

Sources

• AcuRite: Compatibility charts
• AcuRite: Iris (5-in-1) Wind Cups Replacement (06031RM)
• AcuRite: 5-in-1 Sensor Wind Cups, instruction manual (PDF)
• AcuRite: Iris (5-in-1) Wind Cup Assembly Replacement (12123-5N1WCBSA)
• AcuRite: 5-in-1 Sensor Bearing Kit, instruction manual (PDF)
• AcuRite: Notos (3-in-1) Wind Cups Replacement (06030RM)
• AcuRite: Iris (5-in-1) Inaccurate Wind Readings
• AcuRite: Atlas (7-in-1) Inaccurate Wind Speed
• AcuRite: where the model number is on the Iris sensor (temperature and humidity board compatibility)

See also: AcuRite weather stations · AcuRite Iris troubleshooting · Which AcuRite sensor fits