Can cooler temps, temp swings, cause yellowing in upper leaves? Photos.

[Roguejim]

Indoor plants are fine.  Outdoor plants shown in photos.  Both receiving the same nutes so it's not likely to be a nute issue.
 
I put them outside at 10AM, and leave them there until I get home from work around 12-1AM, then into the kitchen until 10AM...  They've only been getting around 4 hours of direct sunlight since they're not completely hardened off, yet.  Night temps have been down in the mid-40s.  Day temps have been 60-70F, but today around 52F, and drizzly.  Plants are outside, but under cover right now. 
 
 
 

 

 

[CAPCOM]

between getting down to the 40s and the being drizzly, that may have a lot to do with it.

 

[Blister]

That'd be my guess. Cool weather seems to slow the uptake of neutes in my plants.

Neil

 

[Roguejim]

Thanks, guys. Right before the last cold snap, I watered/fertilized all the plants. So, I'm thinking it's taking a bit longer for the pots to dry out, and now the plants are exhibiting signs of over watering.