Hello

Thank you for your question and attached pictures, which are always helpful.

Your rye, bluegrass and fescue blend is a cool season grass blend, which are very common in Colorado. They green up earlier in the year and stay green longer in the fall. Cool season grasses will do very well in a part shady area. Your front yard having full sun all day might initiate some dormancy, especially during these unusually hot and windy days. 
Glad to hear you are on a sprinkler system. Thefront yard should require more water then the back.

Looking at the google picture I see some areas of browning along the driveway and again in front of the fence, close to the house. Hard scrape/ walls/ concrete etc warm up the soil and create a warmer microclimate.

I will attach CSU link regarding lawn care, you will find valuable information regarding watering needs, fertilizer needs etc.

Observe your sprinklers, make sure all the sprayers are able to disperse water correctly, measure a cycle, with a few empty cans and see if you water enough according to the link from CSU. Compare how much water the backyard versus the front yard receives.

Ascochyta leaf blight, a fungal disease shows up with great temperature fluctuations, wet weather changing to hot dry days etc. It occurs mostly in blue grass but also in perennial rye and fescue in late spring and early summer. Please review the link attached regarding this fungal disease. 
If you feel you that you are dealing with a turf disease which is not unusual during these weather fluctuations, feel free to respond and maybe send more pictures, a bit further away that would show more of a pattern of browning and also very close up pictures showing the effected grass blades.You could also bring a turf sample into the CSU extension help desk. You would need about a shoe box size sample . Half of it should be the effected turf with healthy turf adjacent. At the Helpdesk a master gardener could look at the grass blades close up and under a microscope. The Helpdesk is open on Monday and Wednesday, 9 am to noon, and 1 pm till 4 pm. The office is on 17 N Spruce Str in CS.

https://extension.colostate.edu/topic-areas/yard-garden/lawn-care-7-202/

https://extension.colostate.edu/topic-areas/yard-garden/ascochyta-leaf-blight-of-turf-2-901/

I hope this information will be help you to resolve your turf issues.

Thank you

Heike W.

I apologize, just saw that the hours for the master gardener Helpdesk were virtual Helpdesk hours.

Please call the office to see when the Helpdesk will be open for the public, if you decide to bring in a turf sample.
https://elpaso.extension.colostate.edu/

Sorry for the late reply. Thanks so much for the detailed response. The recent rains have helped a lot. But, some of the issue in the front still exist. I'm going to post another question about particular weeds we're getting in greater abundance than usual. I'll follow the links you've provided, and let you know if I have further questions. Thanks, again!

You are welcome.

Ascochyta leaf blight seems to love this fluctuating weather. There have been a lot of occurrences in the county. This might be what’s troubling your lawn. Take a look at the link I send previously.

Thank you

Heike W.